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- Title
Effects of saline-alkali and drought stress on seed germination and TvNHX1 expression of Tripolium vulgare.
- Authors
Wei Jia-li; Cui Ji-zhe; Zhao He-xiang; Mi Xiao-ju
- Abstract
By applying 40-400 mmol∙L-1 NaCl, 20-200 mmol∙L-1 NaHCO3, and 5% -30% PEG, this paper studied the effects of saline-alkali and drought stress on the seed germination and Na+ / H+ antiporter gene (TvNHX1) expression of Tripolium vulgare. 40-160 mmol∙L-1 NaCl, 20 mmol∙L-1 NaHCO3, and 5% -10% PEG-6000 had less effects on the seed germination; while ⩾ 240 mmol∙L-1 NaCl decreased the seed germination rate, root length, and shoot length (P < 0.05), ⩾50 mmol∙L-1 NaHCO3 decreased the seed germination rate (P<0.05), 130 mmol∙L-1 NaHCO3 decreased the seed germination potential, root length, and shoot length (P<0.05), and ⩾15% PEG delayed the seed germination. TvNHX1 transcripts were basically constitutive at germi? nation stage, but their expression increased distinctly at 160 mmol∙L -1 NaCl, 100 mmol∙L-1 NaHCO3, and 10% PEG. Under salt and drought stress, the expression of TvNHX1 changed in phase with the phenotype change of germinated seeds, suggesting that TvNHX1 play important roles in the tolerance of T. vulgare against adversity stress.
- Subjects
EFFECT of salts on plants; EFFECT of drought on plants; EFFECT of alkaloids on plants; EFFECT of salt on plants; GERMINATION; PLANT roots; PLANT shoots; PHENOTYPES; DROUGHT tolerance
- Publication
Yingyong Shengtai Xuebao, 2010, Vol 21, Issue 6, p1389
- ISSN
1001-9332
- Publication type
Article