Synergistic effect of 24-epibrassinolide and salicylic acid on photosynthetic efficiency and gene expression in Brassica juncea L. under Pb stress

被引：37
|
作者：
Kohli, Sukhmeen Kaur [1 ]
Handa, Neha [1 ]
Sharma, Anket [2 ]
Kumar, Vinod [1 ]
Kaur, Parminder [1 ]
Bhardwaj, Renu [1 ]
机构：
[1] Guru Nanak Dev Univ, Dept Bot & Environm Sci, Amritsar, Punjab, India
[2] DAV Univ, Dept Bot, Sarmastpur, Jalandhar, India
来源：
TURKISH JOURNAL OF BIOLOGY | 2017年 / 41卷 / 06期
关键词：
Brassinosteroids; chlorophyll; qRT-PCR; root growth; CHLASE gene; WHEAT TRITICUM-AESTIVUM; SALT STRESS; DEHYDRATASE ACTIVITY; ANTIOXIDANT ENZYMES; DEFENSE SYSTEM; LEAD; GROWTH; SEEDLINGS; TOXICITY; DETOXIFICATION;
D O I：
10.3906/biy-1707-15
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Lead (Pb) has wide-ranging effects on various essential physiological processes in plants including seed germination, root/shoot growth, photosynthetic efficiency, water status, and activities of enzymes. The effect of combined treatment of 24-epibrassinolide (10(-7) M, EBL) and salicylic acid (1 mM, SA) on growth, photosynthetic attributes, and phenolic compounds in 30-, 60-, and 90-day-old plants of Brassica juncea L. under Pb stress (0.25 mM, 0.50 mM, and 0.75 mM) were studied. It was observed that Pb toxicity resulted in lowered growth and photosynthetic efficiency. The expressions of CHLASE, PSY, CHS, and PAL genes were altered. Presoaking treatment with the combination of EBL and SA for metal-stressed plants mitigated the adverse effects of metal stress by improving growth and levels of pigment and phenolic compounds.
引用
收藏
页码：943 / 953
页数：11
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