河竹(Phyllostachys rivalis)叶片对长期淹水后恢复正常供水的生理生态响应  

Physiological and ecological response of Phyllostachys rivalis leaves to normal water supply after long-term waterlogging

作　　者：刘玉芳[1] 陈双林[1] 李迎春[1] 郭子武[1] 杨清平[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400

出　　处：《生态学杂志》2016年第2期401-406,共6页Chinese Journal of Ecology

基　　金：浙江省中国林业科学研究院省院合作项目(2012SY05);浙江省自然科学基金项目(LY13C160001);中央级公益性科研院所基本科研业务费专项资金项目(RISF61258)资助

摘　　要：为揭示河竹对长期淹水后恢复正常供水的生理生态响应机制,本研究测定了淹水3个月(TR3)和恢复正常供水3个月(R3)时河竹叶片光合色素、MDA、可溶性蛋白、养分含量和抗氧化酶活性、相对电导率。结果表明,TR3处理时,河竹发生膜脂过氧化,抗氧化系统活性减弱,细胞渗透性增大,渗透调节能力下降,叶片主要养分含量和化学计量比发生明显的适应性调节。与TR3处理相比,R3处理河竹抗氧化系统得到有效的恢复,叶片SOD活性提高了15.58%,相对电导率和MDA含量分别降低了23.64%和43.46%,可溶性蛋白质含量提高了9.58倍,这些指标均恢复到正常生长水平。河竹叶绿体细胞受到的伤害也能得到一定程度的修复,并且叶片主要养分元素含量和化学计量比能完全恢复到正常生长水平,体现出河竹极强的生长恢复能力,可尝试应用于江河湖库消落带的植被恢复。To clarify the physiological and ecological mechanism of response of Phyllostachys ri- valis to normal moisture condition after long-term waterlogging, the contents of photosynthetic pig- ments, MDA, soluble protein and nutrients, antioxidant enzyme activity, and relative conductivity in leaves of Ph. rivalis were investigated after three months of resumed water supply to normal level （R3） after three-month waterlogging （TR3）. The results showed that the membrane lipid peroxidation in Ph. rivalis leaves was produced, antioxidant enzyme activity was weakened, cell permeability was enlarged, osmotic adjustment capacity was decreased and the contents of main nutrients and stoicbiometrie ratio in leaves were adjusted adaptively under TR3 treatment. The antioxidant system of Ph. rivalis could regain effectively under R3 treatment. Compared with TR3 treatment, the SOD activity and soluble protein content under R3 treatment increased by 15.58% and 958%, while the relative conductivity and MDA content decreased by 23.64% and 43.46%, respectively. These indicators all could restore to normal levels. The harm of chloroplast cells could also be repaired to some extent, and the contents of main nutrients and stoiehiometric ratios in leaves could get back to normal levels completely. Hence, all results indicated that Ph. Rivalis had an excellent ability to restore growth and could be used for vegetation restoration of wetlands and areas with fluctuating water tables.

关 键 词：河竹 淹水 正常供水 恢复 生理生态 

分 类 号：S795[农业科学—林木遗传育种]