PDF(Pubmed)
Abstract：
BACKGROUND: Enhancing crops\' drought resilience is necessary to maintain productivity levels. Plants interact synergistically with microorganisms like Beauveria bassiana to improve drought tolerance. Therefore, the current study investigates the effects of biopriming with B. bassiana on drought tolerance in Malva parviflora plants grown under regular irrigation (90% water holding capacity (WHC)), mild (60% WHC), and severe drought stress (30% WHC).
RESULTS: The results showed that drought stress reduced the growth and physiological attributes of M. parviflora. However, those bioprimed with B. bassiana showed higher drought tolerance and enhanced growth, physiological, and biochemical parameters: drought stress enriched malondialdehyde and H2O2 contents. Conversely, exposure to B. bassiana reduced stress markers and significantly increased proline and ascorbic acid content under severe drought stress; it enhanced gibberellic acid and reduced ethylene. Bioprimed M. parviflora, under drought conditions, improved antioxidant enzymatic activity and the plant\'s nutritional status. Besides, ten Inter-Simple Sequence Repeat primers detected a 25% genetic variation between treatments. Genomic DNA template stability (GTS) decreased slightly and was more noticeable in response to drought stress; however, for drought-stressed plants, biopriming with B. bassiana retained the GTS.
CONCLUSIONS: Under drought conditions, biopriming with B. bassiana enhanced Malva\'s growth and nutritional value. This could attenuate photosynthetic alterations, up-regulate secondary metabolites, activate the antioxidant system, and maintain genome integrity.
RESULTS: The results showed that drought stress reduced the growth and physiological attributes of M. parviflora. However, those bioprimed with B. bassiana showed higher drought tolerance and enhanced growth, physiological, and biochemical parameters: drought stress enriched malondialdehyde and H2O2 contents. Conversely, exposure to B. bassiana reduced stress markers and significantly increased proline and ascorbic acid content under severe drought stress; it enhanced gibberellic acid and reduced ethylene. Bioprimed M. parviflora, under drought conditions, improved antioxidant enzymatic activity and the plant\'s nutritional status. Besides, ten Inter-Simple Sequence Repeat primers detected a 25% genetic variation between treatments. Genomic DNA template stability (GTS) decreased slightly and was more noticeable in response to drought stress; however, for drought-stressed plants, biopriming with B. bassiana retained the GTS.
CONCLUSIONS: Under drought conditions, biopriming with B. bassiana enhanced Malva\'s growth and nutritional value. This could attenuate photosynthetic alterations, up-regulate secondary metabolites, activate the antioxidant system, and maintain genome integrity.
摘要：
背景：增强作物的抗旱性对于维持生产力水平是必要的。植物与白僵菌等微生物协同作用以提高耐旱性。因此,当前的研究调查了用白杨进行生物测定对在常规灌溉下生长的Malvaparviflora植物的耐旱性的影响（90％的持水能力（WHC）），轻度（60%WHC），和严重干旱胁迫(30%WHC)。
结果：结果表明，干旱胁迫降低了小草的生长和生理属性。然而,那些用球孢芽孢杆菌进行生物处理的动物表现出更高的耐旱性和增强的生长，生理,生化指标：干旱胁迫富集丙二醛和H2O2含量。相反，在严重的干旱胁迫下，暴露于白孢芽孢杆菌减少了胁迫标记，并显着增加了脯氨酸和抗坏血酸的含量；它增强了赤霉素并降低了乙烯。BioprimedM.parviflora,在干旱条件下，改善抗氧化酶活性和植物的营养状况。此外,十个简单序列重复引物在处理之间检测到25%的遗传变异。基因组DNA模板稳定性（GTS）略有下降，在响应干旱胁迫时更为明显；然而，对于干旱胁迫的植物，用B.bassiana进行的生物测定保留了GTS。
结论：在干旱条件下，与球根芽孢杆菌的生物测定提高了马尔瓦的生长和营养价值。这可以减弱光合改变，上调次级代谢产物，激活抗氧化系统，并保持基因组的完整性。
结果：结果表明，干旱胁迫降低了小草的生长和生理属性。然而,那些用球孢芽孢杆菌进行生物处理的动物表现出更高的耐旱性和增强的生长，生理,生化指标：干旱胁迫富集丙二醛和H2O2含量。相反，在严重的干旱胁迫下，暴露于白孢芽孢杆菌减少了胁迫标记，并显着增加了脯氨酸和抗坏血酸的含量；它增强了赤霉素并降低了乙烯。BioprimedM.parviflora,在干旱条件下，改善抗氧化酶活性和植物的营养状况。此外,十个简单序列重复引物在处理之间检测到25%的遗传变异。基因组DNA模板稳定性（GTS）略有下降，在响应干旱胁迫时更为明显；然而，对于干旱胁迫的植物，用B.bassiana进行的生物测定保留了GTS。
结论：在干旱条件下，与球根芽孢杆菌的生物测定提高了马尔瓦的生长和营养价值。这可以减弱光合改变，上调次级代谢产物，激活抗氧化系统，并保持基因组的完整性。
