...and catalase in chloroplasts. Plant Physiol Biochem 45...

来自 : www.oalib.com/references/16953 发布时间：2021-03-24

ABSTRACT: ？以冬小麦(Triticumaestivum)临远077038为材料,研究了施入外源Ca2+对150、200、250及350mmol·L–1NaCl胁迫下小麦种子萌发及幼苗生长发育的影响。结果表明:20mmol·L–1CaCl2浸种能够提高小麦在150–250mmol·L–1盐胁迫下种子的发芽率,并能增强其生长势;当NaCl浓度为350mmol·L–1时,小麦种子不能萌发,且在以上浓度的NaCl胁迫下,小麦种子均不能发育成苗。对NaCl胁迫下的小麦幼苗施入外源Ca2+后,提高了幼苗膜稳定性,降低了膜脂过氧化程度,从而减轻了盐胁迫对幼苗膜的伤害,表现为电导率降低、MDA含量降低及SOD和POD活性提高,并且提高了幼苗的呼吸强度及叶绿素含量,促进了幼苗生长及生物量的积累;Ca2+的缓解效应随着盐胁迫的加剧逐渐减弱,在浓度为350mmol·L–1的盐胁迫下,幼苗的生物量显著低于对照。以上结果表明,与水处理相比,20mmol·L–1CaCl2处理能够更大程度地促进小麦的生长发育。
Tseng MJ, Liu CW, Yiu JC (2007). Enhanced tolerance to sulfur dioxide and salt stress of transgenic Chinese cabbage plants expressing both superoxide ...Tseng MJ, Liu CW, Yiu JC (2007). Enhanced tolerance to sulfur dioxide and salt stress of transgenic Chinese cabbage plants expressing both superoxide dismutase and catalase in chloroplasts. Plant Physiol Biochem 45, 822-833.Tseng MJ, Liu CW, Yiu JC (2007). Enhanced tolerance to sulfur dioxide and salt stress of transgenic Chinese cabbage plants expressing both superoxide dismutase and catalase in chloroplasts. Plant Physiol Biochem 45, 822-833.Tseng MJ, Liu CW, Yiu JC (2007). Enhanced tolerance to sulfur dioxide and salt stress of transgenic Chinese cabbage plants expressing both superoxide dismutase and catalase in chloroplasts. Plant Physiol Biochem 45, 822