NaCl salinity stress decreased Bacillus thuringiensis (Bt) protein content of transgenic Bt cotton (Gossypium hirsutum L.) seedlings
NaCl salinity stress decreased Bacillus thuringiensis (Bt) protein content of transgenic Bt cotton (Gossypium hirsutum L.) seedlings
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DOI：
10.1016/j.envexpbot.2005.01.003
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发表时间：
2006-03-01
影响因子：
5.7
通讯作者：
Li, ZH
中科院分区：
文献类型：
--
作者：
Jiang, LJ;Duan, LS;Li, ZH
两种转Bt基因棉花苗期反应的研究在0、50、100和200 mM NaCl胁迫下，研究了99 B和SGK 970841对盐胁迫的反应。棉苗生长以株高、叶面积、鲜重和干重为指标，NaCl处理对两个品种的生长发育均呈浓度依赖性降低。两个棉花品种幼苗根、茎、叶的全氮含量均随NaCl浓度的增加而降低。对于这两个品种，可溶性蛋白质含量增加，叶片和茎由于盐胁迫下降，并在根中下降50和100 mM NaCl。盐胁迫降低了两个品种叶片中Bt蛋白的含量，但仍对苗期棉铃虫幼虫具有生物学效应。(c)2005 Elsevier B.V.保留所有权利。
Seedling responses of two transpnic Bacillus thuringiensis (Bt) cotton (Gossypium hirsutuni L.) cultivars, 99B and SGK970841, to salinity stress were studied under 0, 50, 100 and 200 mM NaCl treatments. Cotton seedling growth. indicated by height, leaf area, and fresh and dry weights, of both cultivars was reduced by NaCl in a concentration-dependent manner. Total N concentrations of seedling roots, stems and leaves of both cotton cultivars decreased with increasing NaCl concentrations. For both cultivars, soluble protein content increased in leaves and decreased in stems due to salt stress, and decreased in roots by 50 and 100 mM NaCl. Bt protein concentrations in leaves of both cultivars were decreased by salt stress, but still were biologically effective to control the neonate bollworm larvae in seedling cotton. (c) 2005 Elsevier B.V. All rights reserved.