PDF(Pubmed)
Abstract：
UNASSIGNED: Drought stress usually inhibits plant growth, which may increase the difficulty of greening slopes.
UNASSIGNED: In this study, we systematically investigated the effects of arbuscular mycorrhizal (AM) fungi on the growth and drought tolerance of two plant species, Festuca elata and Cassia glauca, in a vegetation concrete environment by exogenously inoculating AM fungi and setting three drought levels: well water, moderate drought and severe drought. The results showed that plant growth was significantly inhibited under drought stress; however, AM fungi inoculation significantly promoted plant height, root length, and above- and belowground biomass in these two plant species.
UNASSIGNED: Compared with, those in the CK treatment, the greatest increases in the net photosynthesis rate, stomatal conductance and transpiration rate in the AM treatment group were 36.72%, 210.08%, and 66.41%, respectively. Moreover, inoculation with AM fungi increased plant superoxide dismutase and catalase activities by 4.70-150.73% and 9.10-95.70%, respectively, and reduced leaf malondialdehyde content by 2.79-55.01%, which alleviated the damage caused by oxidative stress. These effects alleviated the damage caused by oxidative stress and increased the content of soluble sugars and soluble proteins in plant leaves by 1.52-65.44% and 4.67-97.54%, respectively, which further increased the drought adaptability of plants. However, inoculation with AM fungi had different effects on different plants.
UNASSIGNED: In summary, this study demonstrated that the inoculation of AM fungi in vegetation concrete environments can significantly increase plant growth and drought tolerance. The plants that formed a symbiotic structure with AM fungi had a larger root uptake area, greater water uptake capacity, and greater photosynthesis and gas exchange efficiency. In addition, AM fungi inoculation further increased the drought adaptability of the plants by increasing their antioxidant enzyme activity and regulating their metabolite content. These findings are highly important for promoting plant growth and increasing drought tolerance under drought conditions, especially for potential practical applications in areas such as slope protection, and provide useful references for future ecological engineering and sustainable development.
UNASSIGNED: In this study, we systematically investigated the effects of arbuscular mycorrhizal (AM) fungi on the growth and drought tolerance of two plant species, Festuca elata and Cassia glauca, in a vegetation concrete environment by exogenously inoculating AM fungi and setting three drought levels: well water, moderate drought and severe drought. The results showed that plant growth was significantly inhibited under drought stress; however, AM fungi inoculation significantly promoted plant height, root length, and above- and belowground biomass in these two plant species.
UNASSIGNED: Compared with, those in the CK treatment, the greatest increases in the net photosynthesis rate, stomatal conductance and transpiration rate in the AM treatment group were 36.72%, 210.08%, and 66.41%, respectively. Moreover, inoculation with AM fungi increased plant superoxide dismutase and catalase activities by 4.70-150.73% and 9.10-95.70%, respectively, and reduced leaf malondialdehyde content by 2.79-55.01%, which alleviated the damage caused by oxidative stress. These effects alleviated the damage caused by oxidative stress and increased the content of soluble sugars and soluble proteins in plant leaves by 1.52-65.44% and 4.67-97.54%, respectively, which further increased the drought adaptability of plants. However, inoculation with AM fungi had different effects on different plants.
UNASSIGNED: In summary, this study demonstrated that the inoculation of AM fungi in vegetation concrete environments can significantly increase plant growth and drought tolerance. The plants that formed a symbiotic structure with AM fungi had a larger root uptake area, greater water uptake capacity, and greater photosynthesis and gas exchange efficiency. In addition, AM fungi inoculation further increased the drought adaptability of the plants by increasing their antioxidant enzyme activity and regulating their metabolite content. These findings are highly important for promoting plant growth and increasing drought tolerance under drought conditions, especially for potential practical applications in areas such as slope protection, and provide useful references for future ecological engineering and sustainable development.
摘要：
■干旱胁迫通常会抑制植物生长，这可能会增加斜坡绿化的难度。
■在这项研究中，我们系统地研究了丛枝菌根（AM）真菌对两种植物生长和耐旱性的影响，白羊茅和决明子，在植被混凝土环境中，通过外源接种AM真菌并设定三个干旱水平：井水，中度干旱和重度干旱。结果表明,干旱胁迫下,植物生长受到显著抑制;AM真菌接种显著促进株高,根长,以及这两种植物的地上和地下生物量。
■与，那些在CK治疗中，净光合作用速率的最大增加，AM处理组的气孔导度和蒸腾速率为36.72%,210.08%，和66.41%，分别。此外，接种AM真菌可使植物超氧化物歧化酶和过氧化氢酶活性分别提高4.70-150.73%和9.10-95.70%,分别,叶片丙二醛含量降低2.79-55.01%，减轻了氧化应激造成的损伤。这些作用减轻了氧化应激造成的伤害，使植物叶片中可溶性糖和可溶性蛋白的含量分别增加了1.52-65.44％和4.67-97.54％，分别,这进一步增加了植物的干旱适应性。然而,接种AM真菌对不同植物有不同的影响。
■总之，这项研究表明，在植被具体环境中接种AM真菌可以显着提高植物的生长和耐旱性。与AM真菌形成共生结构的植物具有较大的根系吸收面积,更大的吸水能力，和更大的光合作用和气体交换效率。此外,接种AM真菌通过增加其抗氧化酶活性和调节其代谢物含量，进一步增加了植物的干旱适应性。这些发现对于促进植物生长和提高干旱条件下的耐旱性非常重要，特别是在边坡防护等领域的潜在实际应用，为未来生态工程和可持续发展提供有益参考。
■在这项研究中，我们系统地研究了丛枝菌根（AM）真菌对两种植物生长和耐旱性的影响，白羊茅和决明子，在植被混凝土环境中，通过外源接种AM真菌并设定三个干旱水平：井水，中度干旱和重度干旱。结果表明,干旱胁迫下,植物生长受到显著抑制;AM真菌接种显著促进株高,根长,以及这两种植物的地上和地下生物量。
■与，那些在CK治疗中，净光合作用速率的最大增加，AM处理组的气孔导度和蒸腾速率为36.72%,210.08%，和66.41%，分别。此外，接种AM真菌可使植物超氧化物歧化酶和过氧化氢酶活性分别提高4.70-150.73%和9.10-95.70%,分别,叶片丙二醛含量降低2.79-55.01%，减轻了氧化应激造成的损伤。这些作用减轻了氧化应激造成的伤害，使植物叶片中可溶性糖和可溶性蛋白的含量分别增加了1.52-65.44％和4.67-97.54％，分别,这进一步增加了植物的干旱适应性。然而,接种AM真菌对不同植物有不同的影响。
■总之，这项研究表明，在植被具体环境中接种AM真菌可以显着提高植物的生长和耐旱性。与AM真菌形成共生结构的植物具有较大的根系吸收面积,更大的吸水能力，和更大的光合作用和气体交换效率。此外,接种AM真菌通过增加其抗氧化酶活性和调节其代谢物含量，进一步增加了植物的干旱适应性。这些发现对于促进植物生长和提高干旱条件下的耐旱性非常重要，特别是在边坡防护等领域的潜在实际应用，为未来生态工程和可持续发展提供有益参考。
