Alleviation of Salt Stress in Eggplant (Solanum melongena L.) by Plant-Growth-Promoting Rhizobacteria
Alleviation of Salt Stress in Eggplant (Solanum melongena L.) by Plant-Growth-Promoting Rhizobacteria
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DOI：
10.1080/00103624.2012.666305
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发表时间：
2012-01-01
影响因子：
1.8
通讯作者：
Ok, Yong Sik
中科院分区：
文献类型：
--
作者：
Abd El-Azeem, Samy A. M.;Elwan, Mohmmed W. M.;Ok, Yong Sik
本研究旨在阐明在盐胁迫下接种促进植物生长的根际细菌 (PGPR) 对茄子生长、产量和矿物质含量的影响 [0、25 和 50 mM 氯化钠 (NaCl)]。从受盐影响的玉米和芸豆田中分离出 PGPR 菌株自养黄杆菌 BM13、产气肠杆菌 BM10 和短芽孢杆菌 FK2。盐度的增加降低了茄子的生长和产量，并增加了茄子对钠（Na+）的吸收。然而，接种 PGPR 菌株减少了测试的每个盐度水平的负面影响。与未接种的对照相比，产气大肠杆菌菌株能够促进茄子生长和产量。 B. brevis 是减少盐度负面影响最有效的菌株，其作用是通过增加茄子芽中钾 (K+)/Na+ 比例和 K+-Na+ 选择性来实现的。茄子幼苗接种PGPR可以减轻盐胁迫的负面影响。
This study was conducted to elucidate the effects of inoculation with plant-growth-promoting rhizobacteria (PGPR) on eggplant growth, yield, and mineral content under salt stress [0, 25, and 50 mM sodium chloride (NaCl)]. The PGPR strains Xanthobacter autotrophicus BM13, Enterobacter aerogenes BM10, and Bacillus brevis FK2 were isolated from the salt-affected maize and kidney bean fields. The increase in salinity decreased the growth and yield and increased the sodium (Na+) uptake of eggplant. However, inoculation with PGPR strains reduced the negative effects at each level of salinity tested. The E. aerogenes strain was capable of promoting eggplant growth and yield when compared to an uninoculated control. The B. brevis was the most effective strain for reducing the negative effects of salinity, and its effects occurred through increasing the potassium (K+)/Na+ ratio and K+-Na+ selectivity in the eggplant shoots. Inoculation of the eggplant seedlings with PGPR could alleviate the negative effects of salt stress.