根际氧含量影响植物生长的生理生态机制研究进展  

Ecophysiological mechanisms of plant growth under the influence of rhizosphere oxygen concentration:A review

作　　者：郑小兰[1] 王瑞娇[1] 赵群法 刘勇鹏[1] 王媛媛[1] 孙治强[1] 

机构地区：[1]河南农业大学园艺学院,郑州450002

出　　处：《植物生态学报》2017年第7期805-814,共10页Chinese Journal of Plant Ecology

基　　金：国家重点基础研究发展计划(2016YED-0201008)

摘　　要：氧是植物生命活动所必需的营养因子,充足的氧供应才能满足植物正常生长发育的需求,但频发的洪涝灾害使根系淹水缺氧成为植物生长过程中经常遭受的非生物胁迫。因此,了解植物对根际氧含量变化的响应与适应机制对作物的生产及抗性品种的选育有重要意义。该文对根际氧环境对植物多方面的影响进行了综述,包括植物的需氧量、氧含量对根际环境的影响和氧含量对植物的影响等,并阐明植物在低氧下的伤害与适应机理和植物对低氧信号的感应与信号传导机制,最后总结了避免缺氧伤害的措施,同时还提出根际氧含量方面有待进一步探索的问题与研究方向,为后续的研究提供新思路。Oxygen is an essential substance for plants,and adequate oxygen supply is necessary for plant growth and developments.As one of the major abiotic threats to plants,frequent floods could lead to oxygen deficiency in the rhizosphere.Therefore,it is important to understand the response and adaptive mechanisms of plants to rhizosphere oxygen concentration for crop productions and breeding of resistant varieties.This review shed light on the impacts of rhizosphere oxygen contents on plants from multiple perspectives.We also demonstrated the injury and acclimations caused by oxygen deficiency and the mechanism of low-oxygen signaling.We finally summarized methods to avoid oxygen deficit and prospect of further studies.

关 键 词：根际氧含量 适应机制 氧感应 内氧浓度 增氧 

分 类 号：Q945.79[生物学—植物学]