The response of Mo-hydroxylases and abscisic acid to salinity in wheat genotypes with differing salt tolerances
The response of Mo-hydroxylases and abscisic acid to salinity in wheat genotypes with differing salt tolerances
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不同耐盐性小麦基因型钼羟化酶和脱落酸对盐度的响应
DOI：
10.1007/s11738-012-0974-2
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发表时间：
2012-03
影响因子：
2.6
通讯作者：
Xingyu Jiang
中科院分区：
文献类型：
--
作者：
Zhihui Xia;Feng Chen;Dangqun Cui;Xingyu Jiang
研究了小麦品种石4185和豫麦47对盐胁迫的差异反应。与耐盐性更强的石4185相比，豫麦47对盐的敏感性更高，这与盐胁迫下生长下降幅度更大有关。盐胁迫增加了两个品种的Na+、脯氨酸和超氧阴离子自由基（O2−）含量。耐盐品种石4185叶片Na+含量的增加幅度小于盐敏感品种豫麦47。石4185的脯氨酸含量比豫麦47的增加幅度更大，而超氧阴离子自由基含量的增加幅度则小于豫麦47。这表明，小麦耐盐性可以通过控制Na+从根到地上部的运输来提高，与较高的渗透调节能力和抗氧化活性相关。虽然盐增加了醛氧化酶（AO）活性和脱落酸（阿坝）含量在两个品种的叶和根中加入NaCl的生长培养基，AO和阿坝增加更多的盐敏感品种豫麦47比耐盐品种石4185。黄嘌呤脱氢酶（XDH）活性在两个品种的叶片随着NaCl浓度的增加而增加，但豫麦47比石4185叶片XDH活性增加更显着。施4185根系XDH活性随NaCl浓度的增加而降低，而豫麦47根系XDH活性则随NaCl浓度的增加而升高。本文讨论了AO和XDH酶活性和阿坝含量变化在小麦盐胁迫响应机制中的作用。
The differential responses of the wheat cultivars Shi4185 and Yumai47 to salinity were studied. The higher sensitivity of Yumai47 to salinity was linked to a greater growth reduction under salt stress, compared to more salt-tolerant Shi4185. Salinity increased the Na+, proline and superoxide anion radical (O2−) contents in both cultivars. Leaf Na+content increased less in the more salt-tolerant cultivar Shi4185 than salt-sensitive Yumai47. The proline content increased more significantly in Shi4185 than Yumai47; on the contrary, superoxide anion radical content increased less in Shi4185 than Yumai47. This data indicated that wheat salinity tolerance can be increased by controlling Na+transport from the root to shoot, associated with higher osmotic adjustment capability and antioxidant activity. Although salinity increased aldehyde oxidase (AO) activity and abscisic acid (ABA) content in the leaves and roots of both cultivars following the addition of NaCl to the growth medium, AO and ABA increased more in the salt-sensitive cultivar Yumai47 than the more salt-tolerant cultivar Shi4185. Xanthine dehydrogenase (XDH) activity in the leaves of both cultivars increased with increasing concentrations of NaCl; however, leaf XDH activity increased more significantly in Yumai47 than Shi4185. Root XDH activity in Shi4185 decreased with increasing NaCl concentrations, whereas salinity induced an increased root XDH activity in Yumai47. The involvement of AO and XDH enzymatic activities and altered ABA content in the response mechanisms of wheat to salinity are discussed herein.
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影响因子：
2.7
作者：
H. Heidari-Sharifabad;H. Mirzaie-Nodoushan
通讯作者：
H. Heidari-Sharifabad;H. Mirzaie-Nodoushan
DOI：
10.1016/j.plaphy.2007.09.011
发表时间：
2008
期刊：
Plant physiology and biochemistry : PPB
影响因子：
--
作者：
E. Zdunek-Zastocka
通讯作者：
E. Zdunek-Zastocka
DOI：
10.1002/9780470015902.a0001300.pub2
发表时间：
2007-01
期刊：
--
影响因子：
--
作者：
Jian‐Kang Zhu
通讯作者：
Jian‐Kang Zhu
DOI：
--
发表时间：
2005
期刊：
Acta Botanica Yunnanica
影响因子：
--
作者：
L. Zhong
通讯作者：
L. Zhong
影响因子：
6.9
作者：
Fricke, W;Akhiyarova, G;Kudoyarova, G
通讯作者：
Kudoyarova, G