Nodules

结节
  • 文章类型: Journal Article
    该研究的目的是评估读者在有或没有基于深度学习的AI工具(Rayvolve)的情况下在标准胸片(CXR)上诊断胸部异常的表现,并评估Rayvolve在检测胸部病变中的独立表现CXR。这项回顾性多中心研究分两个阶段进行。在第1阶段,9名读者独立检查了来自A组成像的900个CXR,并在有或没有AI辅助的情况下确定了胸部异常。三位放射科医生的共识是基本事实。在第2阶段,对来自成像组B的1500个CXR进行了Rayvolve的独立性能评估。整个读取器的AUC平均值显着增加了15.94%,与AI辅助阅读相比,无辅助阅读(0.88±0.01vs.0.759±0.07,p<0.001)。读取CXR所需的时间显着减少,35.81%在人工智能辅助下。与无辅助阅读相比,AI辅助阅读的读者的敏感性和特异性的平均值显着增加了11.44%和2.95%(0.857±0.02vs.0.769±0.02和0.974±0.01vs.0.946±0.01,p<0.001)。从独立的角度来看,AI模型达到了平均灵敏度,特异性,PPV,净现值分别为0.964、0.844、0.757和0.9798。在AI帮助下,阅读器的速度和性能显着提高。
    The purpose of the study was to assess the performance of readers in diagnosing thoracic anomalies on standard chest radiographs (CXRs) with and without a deep-learning-based AI tool (Rayvolve) and to evaluate the standalone performance of Rayvolve in detecting thoracic pathologies on CXRs. This retrospective multicentric study was conducted in two phases. In phase 1, nine readers independently reviewed 900 CXRs from imaging group A and identified thoracic abnormalities with and without AI assistance. A consensus from three radiologists served as the ground truth. In phase 2, the standalone performance of Rayvolve was evaluated on 1500 CXRs from imaging group B. The average values of AUC across the readers significantly increased by 15.94%, with AI-assisted reading compared to unaided reading (0.88 ± 0.01 vs. 0.759 ± 0.07, p < 0.001). The time taken to read the CXRs decreased significantly, by 35.81% with AI assistance. The average values of sensitivity and specificity across the readers increased significantly by 11.44% and 2.95% with AI-assisted reading compared to unaided reading (0.857 ± 0.02 vs. 0.769 ± 0.02 and 0.974 ± 0.01 vs. 0.946 ± 0.01, p < 0.001). From the standalone perspective, the AI model achieved an average sensitivity, specificity, PPV, and NPV of 0.964, 0.844, 0.757, and 0.9798. The speed and performance of the readers improved significantly with AI assistance.
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  • 文章类型: Journal Article
    Objective.本研究的目的是评估应变弹性成像在研究甲状腺结节恶性肿瘤中的诊断性能,将手术活检作为金标准参考测试。方法。该研究包括120例患者,123个甲状腺结节,其中67人进行了甲状腺全切除术。美国放射学学会甲状腺成像报告和数据系统(ACR-TIRADS)对所有结节进行了评估。如果所有可疑结节均符合要求的大小,则将其转诊进行细针穿刺细胞学检查(FNAC)。对每个可疑结节进行应变弹性成像。对所有可疑结节进行超声引导FNAC。对FNAC证实可疑结节的患者进行了甲状腺全切除术。结果。应变比具有敏感性,特异性,阳性预测值(PPV),负预测值(NPV),诊断准确率为84%,81%,95%,85%,84%,分别,切点1.96。弹性评分有敏感性,特异性,PPV,NPV,诊断准确率为100%,80%,95%,85%和87%,分别,切点为0.96。弹性评分具有统计学上显著的优势比来检测良性3.9C.I(1.6-9.3)。结论。应变弹性成像在检测恶性和良性结节方面具有很高的诊断性能,因此,它可以限制不需要的FNAC或手术的发生率,尤其是在细胞学不确定的B3和B4组中。
    Objective. The intend of the present study was to assess the diagnostic performance of strain elastography in investigating the thyroid nodule malignancy taking the surgical biopsy as a gold standard reference test. Methods. The study included 120 patients with 123 thyroid nodules, of which 67 had total thyroidectomy. The American College of Radiology Thyroid Imaging Reporting and Data Systems (ACR-TIRADS) were evaluated for all nodules. All suspicious nodules were referred for a fine needle aspiration cytology (FNAC) if they fulfilled the required size. Strain elastography was performed for each suspicious nodule. Ultrasound-guided FNAC was performed for all suspicious nodules. Total thyroidectomy was performed in those whom the suspicious nodules were proven by FNAC. Results. Strain ratio had a sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy of 84%, 81%, 95%, 85%, and 84%, respectively, with a cut point 1.96. Elasticity score had a sensitivity, specificity, PPV, NPV, and diagnostic accuracy of 100%, 80%, 95%, 85% and 87%, respectively, with a cut point 0.96. The elasticity score had a statistically significantly odds ratio for detecting the benignity 3.9 C. I (1.6-9.3). Conclusion. Strain elastography has a high diagnostic performance in detecting the malignant as well as benign nodules, thus it can limit the rate of unneeded FNAC or surgery especially among B3 and B4 groups with indeterminate cytology.
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  • 文章类型: Journal Article
    背景:EU-甲状腺成像报告和数据系统(EU-TIRADS)允许选择性细针穿刺细胞学(FNAC)。2017年,EU-TIRADS作为瑞典西部全国甲状腺癌标准化护理包的一部分实施,人口约170万。这项研究的目的是调查EU-TIRADS试图减少甲状腺结节转诊患者不必要的FNAC数量的临床价值。
    方法:研究队列包括所有因以下原因转诊至Sahlgrenska大学医院的患者:在2018年至2022年期间,新发现或生长的甲状腺结节或甲状腺超声检查和选择性细胞学检查的PET阳性发现。关于EU-TIRADS分类的医疗记录,回顾性收集相应的FNAC结果和组织病理学诊断.遵守EU-TIRADS指南,我们对接受手术的患者使用选择性FNAC和恶性肿瘤(ROM)的发生率进行了评估.
    结果:总计,对990例患者的1246个甲状腺结节进行了评估。EU-TIRADS2-5n(%)的分布为:63(5);462(37);443(36);278(22)。在7%的被调查患者中省略了FNAC。尽管未达到EU-TIRADS标准或没有PET阳性发现,但仍在124个结节(10%)中进行了FNAC。接受“不必要”FNAC的患者的ROM为33%和1/50。
    结论:在甲状腺结节的常规管理中实施EU-TIRADS导致选择性使用FNAC,但临床影响有限.这项研究通过在临床实践中实施EU-TIRADS提供了有关诊断改进的价值和幅度的实际数据。
    OBJECTIVE: The European Thyroid Imaging Reporting and Data System (EU-TIRADS) allows for selective fine needle aspiration cytology (FNAC). In 2017, EU-TIRADS was implemented as part of a nationwide standardized care bundle for thyroid cancer in Western Sweden with a population of approximately 1.7 million. The objective of this study was to investigate the clinical value of EU-TIRADS attempting to reduce the number of unnecessary FNACs in referred patients with thyroid nodules.
    METHODS: The study cohort consisted of all patients referred to Sahlgrenska University Hospital due to a palpable, newly detected or growing thyroid nodules or a positron emission tomography-positive finding for examination with thyroid ultrasound and selective cytology between 2018 and 2022. Medical records on EU-TIRADS classification, corresponding FNAC results, and histopathologic diagnosis were retrospectively collected. Adherence to the EU-TIRADS guidelines, use of selective FNAC, and rate of malignancy in patients who underwent surgery were assessed.
    RESULTS: In total, 1246 thyroid nodules in 990 patients were evaluated. The distributions of EU-TIRADS 2 to 5 (number [percentage]) for all examined nodules were 63 (5%), 462 (37%), 443 (36%), and 278 (22%), respectively. FNAC was omitted in 7% of the investigated patients. FNAC was performed in 124 nodules (10%) despite not fulfilling the EU-TIRADS criteria or absence of positron emission tomography-positive findings. The rate of malignancy was 33% and 1/50 in patients who underwent \"unnecessary\" FNAC.
    CONCLUSIONS: Implementation of EU-TIRADS in routine management of thyroid nodules led to the selective use of FNAC; however, the clinical impact was limited. This study provides real-world data on the value and magnitude of diagnostic improvement by implementing EU-TIRADS in clinical practice.
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  • 文章类型: Journal Article
    主动脉瓣小叶钙化对全球每年因心脏病夺去的1800万人的生命构成了越来越大的死亡率威胁。广泛的研究集中在与钙化相关的细胞和分子病理生理学上,然而详细的组成,结构,矿物沉积的分布和病因史仍然未知。这里是跨学科的地质学,生物学和医学(GeoBioMed)方法证明小叶钙化是由无定形磷酸钙(ACP)驱动的,ACP处于向羟基磷灰石(HAP)和胆固醇生物矿化转化的阈值。观察到一个共生的事件序列,包括:(1)未改变的小叶组织的原始形成:(2)个体并合并100μm至1μm规模的ACP球体和胆固醇晶体,使胶原纤维和平滑肌细胞肌丝生物矿化;(3)稳定ACP和结节的胶原容纳的骨桥蛋白涂层,防止暴露于溶液化学和泵送血液的水含量,这与减缓向HAP的转化相结合;(4)通过ACP球团聚结实现毫米尺度的结节生长,与其他ACP结节的胶原改变和聚集的成岩性掺入;(5)小叶舒张和收缩弯曲导致结节扭曲,折叠它们包裹的胶原纤维,增加硬度。这些体内机制可以减缓小叶钙化,并建立了以前未探索的假设,用于测试新的药物疗法和临床干预措施,作为当前依赖外科/经皮瓣膜植入物的可行替代方案。
    Calcification of aortic valve leaflets is a growing mortality threat for the 18 million human lives claimed globally each year by heart disease. Extensive research has focused on the cellular and molecular pathophysiology associated with calcification, yet the detailed composition, structure, distribution and etiological history of mineral deposition remains unknown. Here transdisciplinary geology, biology and medicine (GeoBioMed) approaches prove that leaflet calcification is driven by amorphous calcium phosphate (ACP), ACP at the threshold of transformation toward hydroxyapatite (HAP) and cholesterol biomineralization. A paragenetic sequence of events is observed that includes: (1) original formation of unaltered leaflet tissues: (2) individual and coalescing 100\'s nm- to 1 μm-scale ACP spherules and cholesterol crystals biomineralizing collagen fibers and smooth muscle cell myofilaments; (3) osteopontin coatings that stabilize ACP and collagen containment of nodules preventing exposure to the solution chemistry and water content of pumping blood, which combine to slow transformation to HAP; (4) mm-scale nodule growth via ACP spherule coalescence, diagenetic incorporation of altered collagen and aggregation with other ACP nodules; and (5) leaflet diastole and systole flexure causing nodules to twist, fold their encasing collagen fibers and increase stiffness. These in vivo mechanisms combine to slow leaflet calcification and establish previously unexplored hypotheses for testing novel drug therapies and clinical interventions as viable alternatives to current reliance on surgical/percutaneous valve implants.
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  • 文章类型: Journal Article
    背景:激光消融(LA)是一种微创治疗方法。自2000年代初以来,它已被广泛用于诱导有症状的良性甲状腺结节的体积减少。据报道,多达40%的激光治疗结节在12个月时体积减少<50%(技术无效),并且随着时间的推移会重新生长。
    目的:本研究旨在评估最佳的基线体积和能量,以最大程度地减少技术无效。
    方法:这是一项回顾性研究。收集数据,包括基线体积,输送的能量,2010年至2020年间接受LA治疗的海绵状结节(EU-TIRADS2)的12个月体积减少率(VRR)。基于这些数据,计算最佳基线体积和能量,以最大限度地提高具有技术功效的结节发生率(12个月随访时VRR≥50%).
    结果:本研究共纳入205例海绵状结节患者。传递的能量与VRR呈正相关。然而,基线体积和VRR之间未观察到相关性.向平均基线体积为11.4±4mL的结节提供≥500J/mL的能量导致83%的病例的技术疗效。
    结论:治疗基线体积≤15mL的海绵状结节和输送能量≥500J/mL是获得相关技术疗效率的关键因素。
    BACKGROUND: Laser ablation (LA) is a minimally invasive treatment. It has been widely used since the early 2000s to induce volume reduction of symptomatic benign thyroid nodules. Up to 40% of laser-treated nodules have been reported to achieve a volume reduction of <50% (technique inefficacy) at 12 months and tend to regrow over time.
    OBJECTIVE: This study aimed to assess the optimal baseline volume and energy to be delivered to minimize technique inefficacy.
    METHODS: This was a retrospective study. Data were collected, including baseline volume, energy delivered, and 12-month volume reduction ratio (VRR) of spongiform nodules (EU-TIRADS 2) treated with LA between 2010 and 2020. Based on these data, the optimal baseline volume and energy to be delivered were calculated to maximize the rate of nodules with technique efficacy (VRR ≥ 50% at 12-month follow-up).
    RESULTS: A total of 205 patients with spongiform nodules were included in this study. The energy delivered was positively associated with VRR. However, no association was observed between baseline volume and VRR. Delivering energy ≥500 J/mL to nodules with a mean baseline volume of 11.4 ± 4 mL resulted in technique efficacy in 83% of cases.
    CONCLUSIONS: Treating spongiform nodules with a baseline volume of ≤15 mL and delivering energy ≥500 J/mL are key factors for achieving a relevant rate of technique efficacy.
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  • 文章类型: Journal Article
    背景:已经广泛研究了临时和永久性填料的并发症。然而,缺乏关于聚-L-乳酸(PLLA)的比较数据,钙羟基磷灰石(CaHA),和聚己内酯(PCL)被称为胶原生物刺激剂。
    目的:本研究讨论了胶原生物刺激剂的诊断并发症,产品类型,治疗,和监测。
    方法:向巴西皮肤超声专家发送电子问卷,以确定与生物刺激器相关的并发症。生物刺激器的类型,申请地点,注射的小瓶数量,申请计划,注射治疗和并发症之间的时间,喷油器轮廓,治疗,并评估预后。
    结果:确定了55例,其中49.1%由PLLA-Elleva®引起,23.6%的CaHA(单独或与透明质酸组合),20.0%由PLLA-Sculptra®,PCL为7.3%。受影响最大的部位是面部(72.7%),结节是最常见的临床形式(89.1%),一般发生晚(60.0%)(>1个月)。只有一例在不正确的深度(肌膜神经系统-SMAS)注射。尽管有几次治疗,包括生理盐水(45.5%),透明质酸酶(25.5%),稀释的皮质类固醇(23.6%),和基于能源的设备(10.9%),只有五个案例显示完全解决。当羟基磷灰石钙与透明质酸存在关联时,透明质酸酶在与填充剂相关的并发症中是有益的(p<0.01)。
    结论:胶原生物刺激剂引起的并发症在面部更为常见,通常表现在治疗后约1个月。这些问题似乎更多地与产品的性能有关,而不是技术不足。此外,透明质酸酶仅在与HA相关的情况下显示出功效。
    BACKGROUND: Complications of temporary and permanent fillers have been extensively studied. However, there is a lack of comparative data regarding poly-L-lactic acid (PLLA), calcium hydroxyapatite (CaHA), and polycaprolactone (PCL) known as collagen biostimulators.
    OBJECTIVE: This study addressed the complications of collagen biostimulators concerning their diagnosis, type of product, treatment, and monitoring.
    METHODS: An electronic questionnaire was sent to Brazilian dermatologic ultrasound experts to identify complications related to biostimulators. The type of biostimulator, location of application, number of vials injected, application plan, time between injection treatment and complication, injector profile, treatment, and prognosis were assessed.
    RESULTS: Fifty-five cases were identified, of which 49.1% were caused by PLLA-Elleva®, 23.6% by CaHA (alone or combined with hyaluronic acid), 20.0% by PLLA-Sculptra®, and 7.3% by PCL. The most affected area was the face (72.7%), with nodules being the most common clinical form (89.1%), generally occurring late (60.0%) (>1 month). Only one case was injected at an incorrect depth (musculoaponeurotic system-SMAS). Despite several treatments, including saline (45.5%), hyaluronidase (25.5%), diluted corticosteroids (23.6%), and energy-based devices (10.9%), only five cases showed complete resolution. Hyaluronidase was beneficial in complications related to fillers when there was an association of calcium hydroxyapatite with hyaluronic acid (p < 0.01).
    CONCLUSIONS: Complications from collagen biostimulators were more common on the face, typically manifesting about 1 month after treatment. These issues seemed to be related more to the properties of the products rather than inadequate technique. Furthermore, hyaluronidase demonstrated efficacy only in cases where there was an association with HA.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    通过胸部CT扫描准确诊断恶性肺结节,早期发现肺癌,为患者提供了最大的成功治疗和生存机会。尽管通过深度学习算法在计算机视觉方面取得了进步,由于训练数据集不足,恶性结节的检测面临重大挑战.
    本研究引入了一种基于协作式深度学习(CDL)的模型,以在可用数据有限的胸部CT扫描中区分癌性和非癌性结节。该模型使用六个特征将结节分解为其组成部分,让它学习肺结节的详细特征。它利用CDL子模型,其中包含六种类型的特征补丁,以微调先前使用ResNet-50训练的网络。通过误差反向传播学习的自适应加权方法增强了识别肺结节的过程,合并这些CDL子模型以提高准确性。
    CDL模型在分类肺结节方面表现出高水平的性能,达到93.24%的准确率。这代表了对当前最先进的方法的重大改进,表明了所提出方法的有效性。
    研究结果表明,CDL模型,凭借其独特的结构和自适应加权方法,为用有限的数据准确检测恶性肺结节的挑战提供了有希望的解决方案。这种方法不仅提高了诊断的准确性,而且有助于肺癌的早期发现和治疗。有可能挽救生命。
    UNASSIGNED: Early detection of lung cancer through accurate diagnosis of malignant lung nodules using chest CT scans offers patients the highest chance of successful treatment and survival. Despite advancements in computer vision through deep learning algorithms, the detection of malignant nodules faces significant challenges due to insufficient training datasets.
    UNASSIGNED: This study introduces a model based on collaborative deep learning (CDL) to differentiate between cancerous and non-cancerous nodules in chest CT scans with limited available data. The model dissects a nodule into its constituent parts using six characteristics, allowing it to learn detailed features of lung nodules. It utilizes a CDL submodel that incorporates six types of feature patches to fine-tune a network previously trained with ResNet-50. An adaptive weighting method learned through error backpropagation enhances the process of identifying lung nodules, incorporating these CDL submodels for improved accuracy.
    UNASSIGNED: The CDL model demonstrated a high level of performance in classifying lung nodules, achieving an accuracy of 93.24%. This represents a significant improvement over current state-of-the-art methods, indicating the effectiveness of the proposed approach.
    UNASSIGNED: The findings suggest that the CDL model, with its unique structure and adaptive weighting method, offers a promising solution to the challenge of accurately detecting malignant lung nodules with limited data. This approach not only improves diagnostic accuracy but also contributes to the early detection and treatment of lung cancer, potentially saving lives.
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  • 文章类型: Journal Article
    水稻休耕黑克是在零耕作条件下在重质地蒙脱石粘土土壤中作为中继作物在残留水分情况下生长的。由于作物是在季风后季节种植的,由于有限的水供应和没有降雨,作物经常经历最终压力。蒙脱石粘土土壤中的地面灌溉对豆类作物具有抑制作用,因为淹没会导致枯萎。因此,零耕种水稻休耕黑克必须在开花期(播种后35天)补充微灌,以减轻水分胁迫并提高生产率。因此,在一个公顷田地的一角创建了微型农场池塘,以在季风季节收获雨水,并在开花期通过移动式洒水器对保护性农业下种植的作物进行救生灌溉。土壤开裂也是蒙脱石黏土的常见现象,其中蒸发损失将更多地通过裂缝表面。因此,本研究旨在研究土壤物理性质的变化,与机械化播种和收获以及补充移动喷灌相结合的作物建立和生产力。在手工收获水稻前10天通过广播播种黑克,在水稻机收后手动绘制单行播种机,并在水稻机收前4天通过广播播种,分别进行了试验,并与救生灌溉相结合。结果表明,车轮通过次数和救生灌溉对土壤渗透阻力和土壤水分有很大影响。联合收割机,然后不播种,增加了所有层的土壤渗透阻力(0-5厘米,5-10厘米和10-15厘米)。两次通过车轮将平均土壤渗透阻力从407KPa增加到502KPa。收获时的土壤渗透阻力(0-5厘米)表明,在30DAS上补充生命灌溉的稻田人工收获前10天,通过人工广播播种的黑克将土壤渗透阻力从690Kpa降低到500Kpa,在0-5厘米时,分别为740Kpa至600Kpa和760Kpa至620Kpa,5-10厘米和10-15厘米层。总的来说,与5-10cm和10-15cm至30DAS(开花阶段)的其他层相比,0-5cm的表面层的水分消耗速率很快。水分含量与土壤渗透阻力呈反比关系。土壤渗透阻力也与根长成反比,其中根长随着土壤渗透阻力的增加而降低。在60DAS下测得的土壤裂缝更深,没有播种(宽度为3.94cm,深度为13.67cm),这主要是由于表层压实。相对含水量,通过在30DAS上进行的补充灌溉,无论作物建立方法如何,比叶重和叶绿素含量都显着提高。结果进一步表明,由于联合收割机和无耕种播种机,潮湿土壤中耕层的压实对产量(457kgha-1)有负面影响,由于补充灌溉增加了土壤水分,这一比例提高了19.03%。由于通过移动喷头进行补充救生灌溉,不同处理的平均产量增加了20.4%。
    Rice fallow black gram is grown under the residual moisture situation as a relay crop in heavy texture montmorillonite clay soil under zero till condition. Since the crop is raised during post monsoon season, the crop often experiences terminal stress due to limited water availability and no rainfall. Surface irrigation in montmorillonite clay soil is determent to pulse crop as inundation causes wilting. Therefore, zero tilled rice fallow black gram has to be supplemented with micro irrigation at flowering stage (35 days after sowing) to alleviate moisture stress and to increase the productivity as well. Hence micro farm pond in a corner of one ha field was created to harvest the rain water during monsoon season and the same was utilized to supplement the crop with lifesaving irrigation through mobile sprinkler at flowering stage for the crop grown under conservation agriculture. Soil cracking is also the common phenomena of montmorillonite clay soil where evaporations losses would be more through crack surfaces. The present study was therefore conducted to study the changes in the soil physical properties, crop establishment and productivity in conjunction with mechanized sowing and harvest and supplemental mobile sprinkler irrigation. Sowing of black gram by broadcasting 10 days prior to the manual harvest of rice, manual drawn single row seed drill after the machine harvest of rice and sowing by broadcasting at 4 days prior to machine harvest of rice was experimented separately and in combination with lifesaving irrigation. Results indicated that the number of wheel passes and lifesaving irrigation had a very strong impact on soil penetration resistance and soil moisture. Combined harvester followed by no till seed drill increased the soil penetration resistance in all the layers (0-5 cm, 5-10 cm and 10-15 cm). Two passes of wheel increased the mean soil penetration resistance from 407 KPa to 502 KPa. The soil penetration resistance (0-5 cm) at harvest shown that black gram sown by manual broadcasting 10 days prior to manual harvest of paddy supplemented with life irrigation on 30 DAS reduced the soil penetration resistance from 690 Kpa to 500 Kpa, 740 Kpa to 600 Kpa and 760 Kpa to 620 Kpa respectively at 0-5 cm, 5-10 cm and 10-15 cm layer. In general, moisture depletion rate was rapid in the surface layer of 0-5 cm as compared to other layers of 5-10 cm and 10-15 cm up to 30 DAS (Flowering stage). The moisture content and the soil penetration resistance had an inverse relationship. The soil penetration resistance also had an inverse relationship with the root length in which the root length lowers as the soil penetration resistance increases. The soil crack measured at 60 DAS was deeper with no till seed drill (width of 3.94 cm and depth of 13.67 cm) which was mainly due to surface layer compaction. The relative water content, specific leaf weight and chlorophyll content were significantly improved through the supplemental irrigation given on 30 DAS irrespective of crop establishment methods. The results further indicated that compaction of ploughed layer in the moist soil due to combined harvester and no till seed drill had a negative impact on yield (457 kg ha-1), which was improved by 19.03 per cent due to increased soil moisture with supplemental irrigation. The mean yield increase across different treatments due to supplemental lifesaving irrigation through mobile sprinkler was 20.4 per cent.
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  • 文章类型: Journal Article
    免疫和衰老在豆科植物共生结节的功能中起着至关重要的作用。这些过程之一的失调会损害共生关系,导致内共生体死亡和结节功能停止。免疫和衰老之间的关系已经在植物器官中被广泛研究,其中可以观察到协同反应。然而,在共生器官中,免疫和衰老之间的相互作用在文献中很少讨论,这些现象经常混淆。最近的研究表明,免疫和衰老之间的合作并不总是在结节中观察到,表明共生器官内这两个过程之间复杂的相互作用。这里,我们讨论了根瘤中免疫与衰老之间相互作用的最新结果,以及豆科植物-根瘤菌共生过程中这种关系的特异性。
    Immunity and senescence play a crucial role in the functioning of the legume symbiotic nodules. The miss-regulation of one of these processes compromises the symbiosis leading to death of the endosymbiont and the arrest of the nodule functioning. The relationship between immunity and senescence has been extensively studied in plant organs where a synergistic response can be observed. However, the interplay between immunity and senescence in the symbiotic organ is poorly discussed in the literature and these phenomena are often mixed up. Recent studies revealed that the cooperation between immunity and senescence is not always observed in the nodule, suggesting complex interactions between these two processes within the symbiotic organ. Here, we discuss recent results on the interplay between immunity and senescence in the nodule and the specificities of this relationship during legume-rhizobium symbiosis.
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