文献类型：期刊文献

英文题名：Gender-specific responses of Salix viminalis roots in morphology and physiology subjected to flooding

作者：Zhang, Yunxing[1] Zhang, Shaowei[2] Li, Jing[1] Li, Zhenjian[3] Li, Haidong[1] Mao, Jinmei[4] Zhai, Feifei[1] Liu, Junxiang[3] Sun, Zhenyuan[3]

第一作者：Zhang, Yunxing

通信作者：Zhai, FF[1];Liu, JX[2]

机构：[1]Henan Polytech Univ, Sch Architectural & Artist Design, Jiaozuo 454000, Peoples R China;[2]Henan Open Univ, Sch Agroforestry & Med, Zhengzhou 450046, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat,State Forestry Ad, Beijing 100091, Peoples R China;[4]Xinjiang Acad Forestry, Res Inst Econ Forest, Urumqi 830063, Peoples R China

年份：2023

卷号：303

外文期刊名：FLORA

收录：;Scopus(收录号：2-s2.0-85158007053);WOS:【SCI-EXPANDED(收录号:WOS:001000926600001)】；

基金：Funding This work was supported by the Fundamental Research Funds for the Universities of Henan Province (grant number NSFRF220434) ; the Key Technologies R & D Program of Henan Province (grant number 222102110378 and 232102110242) ; the Young Backbone Teacher Foundation of Henan Polytechnic University (grant number 2020XQG-19) ; and the National Natural Science Foundation of China (grant number 31700533) .

语种：英文

外文关键词：Dioecy; Gender difference; Anaerobic respiration; Non-structural carbohydrates; Adventitious roots; Waterlogging

摘要：Flooding is one of the most common abiotic stresses that plants suffer. Roots are organs that directly sense anoxic environments, but there are few researches on the response of roots to flooding. In this research, the responses of male and female Salix viminalis plants to flooding were investigated by examining the morphological and physiological responses of roots. Our results showed that primary roots (PRs) growth was significantly inhibited and damaged to a certain extent. However, adventitious roots (ARs) formed in a short time and were essential for plants to endure flooding. To cope with flooding stress, the antioxidant enzyme activities of superoxide dis-mutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX) increased. Although Pro-contents increased, they were too low to contribute significantly to osmotic adjustment. The anaerobic respiration metabolic pathway was also activated, as proven by increased pyruvate decarboxylase (PDC), alcohol dehy-drogenase (ADH), and lactate dehydrogenase (LDH) activities, and the ethanol metabolism pathway might have a key function in adapting to the hypoxic environment for S. viminalis. In addition, increased non-structural carbohydrates (NSCs) of starch and soluble sugar (SS) contents indicated that quiescence strategy might exist in S. viminalis. Overall, there were no significant differences between males and females under flooding stress, and both genders exhibited strong adaptability to the flooding environment. Therefore, two genders of S. viminalis could be applied in the riparian zone.