Salt tolerance in Zea mays (L). following inoculation with Rhizobium and Pseudomonas
Salt tolerance in Zea mays (L). following inoculation with Rhizobium and Pseudomonas
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DOI：
10.1007/s00374-008-0344-9
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发表时间：
2009-03-01
影响因子：
6.5
通讯作者：
Fatima, Mussarat
中科院分区：
文献类型：
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作者：
Bano, Asghari;Fatima, Mussarat
本研究旨在探讨接种植物促生根瘤菌和假单胞菌对NaCl胁迫玉米的影响。两个品种的玉米（CV。Agaiti 2002和cv. Av 4001）在7月期间在自然条件下在室外盆栽中生长。在苗期施用微生物，并在播种后21天诱导盐胁迫，并在120天的胁迫后保持高达50%的开花。盐处理对植物的生长发育产生不利影响。共接种导致玉米植株在盐胁迫下的一些积极的适应性反应。从接种的耐盐性一般介导的电解质渗漏和渗透势的降低，增加调节剂（脯氨酸）的生产，保持相对含水量的叶片，和K离子的选择性吸收。一般来说，微生物菌株协同作用。然而，在非胁迫条件下，根瘤菌比假单胞菌更有效，但在盐胁迫下，即使也观察到一些例外，也观察到有利的效果。玉米CV。Agaiti 2002似乎对接种更敏感，与cv相比，对盐的耐受性相对较低。Av 4001.
This study aimed to investigate the effect of inoculation with plant growth-promoting Rhizobium and Pseudomonas species on NaCl-affected maize. Two cultivars of maize (cv. Agaiti 2002 and cv. Av 4001) selected on the basis of their yield potential were grown in pots outdoors under natural conditions during July. Microorganisms were applied at seedling stage and salt stress was induced 21 days after sowing and maintained up to 50% flowering after 120 days of stress. The salt treatment caused a detrimental effect on growth and development of plants. Co-inoculation resulted in some positive adaptative responses of maize plants under salinity. The salt tolerance from inoculation was generally mediated by decreases in electrolyte leakage and in osmotic potential, an increase in osmoregulant (proline) production, maintenance of relative water content of leaves, and selective uptake of K ions. Generally, the microbial strain acted synergistically. However, under unstressed conditions, Rhizobium was more effective than Pseudomonas but under salt stress the favorable effect was observed even if some exceptions were also observed. The maize cv. Agaiti 2002 appeared to be more responsive to inoculation and was relatively less tolerant to salt compared to that of cv. Av 4001.