应用生态学报2017，Vol.28Issue(10)：3267-3273,7.DOI:10.13287/j.1001-9332.201710.006
硫化氢对淹水平邑甜茶根系形态构型、叶片活性氧和光合特性的影响
Effects of hydrogen sulfide on root architecture, leaf reactive oxygen and photosynthetic characteristics of Malus hupehensis under waterlogging
摘要
Abstract
The root architecture,leaf reactive oxygen species and photosynthetic characteristics of potted Malus hupehensis seedlings were investigated after 10 days of waterlogging under five concentrations of hydrogen sulfide (H2S) donor sodium hydrosulfide (NaSH,0,0.02,0.05,0.1,0.2 mmol · L-1) and NaSH with scavenger hypotaurine (HT).The results showed that the root length,root surface-area,root volume,root diameter,root top number,fractal dimension,first lateral roots and mot activity all increased,the leaf superoxide anion (O2-·) accumulation and hydrogen peroxide (H2O2) content both decreased,the leaf Pn,Tr,gs,WUE and CUE all raised,the plant height and biomass both increased when the 0.02-0.1 mmol · L-1 NaHS were added to the waterlogging environment.Adding 0.1 mmol · L-1 NaHS showed the best effects.All these parameters dropped back to the level of waterlogging alone when NaHS concentration was 0.2 mmol · L-1 or HT was added to the 0.1 mmol · L-1 NaHS solution.These suggested that applying an appropriate amount of H2S could effectively alleviate the inhibition of soil waterlogging on the root growth of M.hupehensis and relieve the effects of waterlogging stress on photosynthesis and plant growth by reducing the production of reactive oxygen species and increasing CUE.关键词
平邑甜茶/淹水/硫化氢/根系构型/光合作用Key words
Malus hupehensis/waterlogging/hydrogen sulfide/root architecture/photosynthesis引用本文复制引用
魏国芹,曹辉,孙玉刚,邓波,张玮玮,杨洪强..硫化氢对淹水平邑甜茶根系形态构型、叶片活性氧和光合特性的影响[J].应用生态学报,2017,28(10):3267-3273,7.基金项目
本文由国家自然科学基金项目(31372016)和“十二五”国家科技支撑计划项目(2014BAD16B02)资助 This work was supported by the National Nutural Science Foundation of China (31372016) and the National Science and Technology Pillar Program during the 12th Five-year Plan Period (2014BAD16B02). （31372016）
