期刊
ACTA PHYSIOLOGIAE PLANTARUM
卷 36, 期 10, 页码 2827-2833出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11738-014-1600-2
关键词
Flowering; Induction; L. aequinoctialis; Nitric oxide; NO scavengers; NOS inhibitors; Salicylic acid
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi
- University of Delhi
Salicylic acid (SA) is a well-known inducer of flowering in Lemna under both non-inductive and inductive photoperiod conditions. However, the underlying mechanism is not well understood. Herein, we report for the first time that nitric oxide (NO) is partially involved in SA-induced flowering in L. aequinoctialis (Syn. L. paucicostata Hegelm.). Our results demonstrated that SA-induced flowering is significantly reduced by exogenous application of NO scavengers; 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide and methylene blue, nitric oxide synthase inhibitors; N-omega-nitro-l-arginine and N-omega-nitro-l-arginine-methyl ester hydrochloride, and nitrate reductase inhibitor; sodium tungstate in two strains of Lemna viz. 6746 and LP6. Altogether our present findings shed a light on the new role of NO in SA-induced flowering and open interesting directions that need further investigation.
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