caa a22 4500 463160630 CHVBK 20180406164746.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10535-007-0082-0 doi (NATIONALLICENCE)springer-10.1007/s10535-007-0082-0 Effect of osmotic stress and sodium nitroprusside pretreatment on proline metabolism of wheat seedlings [Elektronische Daten] [Y. Lei, C. Yin, J. Ren, C. Li] Effect of osmotic stress and sodium nitroprusside (SNP, NO donor) pretreatment on growth and proline metabolism of wheat seedlings was investigated. Polyethylene glycol 6000 treatment for 2, 4 and 6 d could be termed as mild, moderate and severe stress, respectively, according to decrease in the relative water content. Severe osmotic stress significantly decreased the growth and photochemical efficiency, and increased proline content due to activation of its synthesis. 0.2 mM SNP pretreatment enhanced growth of wheat seedlings, increased variable to maximum fluorescence ratio (Fv/Fm) and fluorescence yield, while decreased proline content. However, 2 mM SNP retarded the seedlings growth and chlorophyll a fluorescence, and increased proline accumulation. Our results showed that NO might be involved in the regulation of osmotic stress in a concentration-dependent manner. Institute of Experimental Botany, ASCR, 2007 chlorophyll a fluorescence nationallicence exogenous nitric oxide nationallicence Triticum aestivum L nationallicence ABA : abscisic acid nationallicence P5C : Δ-pyrroline-5-carboxylate nationallicence P5CS : P5C synthetase nationallicence PEG : polyethylene glycol nationallicence RWC : relative water content nationallicence SNP : sodium nitroprusside nationallicence Lei Y. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut Yin C. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut Ren J. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut Li C. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut Biologia Plantarum Kluwer Academic Publishers-Consultants Bureau 51/2(2007-06-01), 386-390 0006-3134 51:2<386 2007 51 10535 https://doi.org/10.1007/s10535-007-0082-0 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10535-007-0082-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lei Y. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut NATIONALLICENCE 700 1- Yin C. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut NATIONALLICENCE 700 1- Ren J. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut NATIONALLICENCE 700 1- Li C. Chengdu Institute of Biology, Chinese Academy of Sciences, P.O.Box 416, 610041, Chengdu, P.R. China aut NATIONALLICENCE 773 0- Biologia Plantarum Kluwer Academic Publishers-Consultants Bureau 51/2(2007-06-01), 386-390 0006-3134 51:2<386 2007 51 10535 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer