文献类型：期刊文献

英文题名：Adaptation of the Invasive Plant Sphagneticola trilobata (L.) Pruski to Drought Stress

作者：Zhang, Qilei[1,2] Wang, Ye[1] Weng, Zhilong[1] Chen, Guangxin[1] Peng, Changlian[1]

第一作者：张启雷;Zhang, Qilei

通信作者：Peng, CL[1]

机构：[1]South China Normal Univ, Sch Life Sci, Guangzhou Key Lab Subtrop Biodivers & Biomonitorin, Guangdong Prov Key Lab Biotechnol Plant Dev, Guangzhou 510631, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China

年份：2024

卷号：13

期号：16

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-85202608024);WOS:【SCI-EXPANDED(收录号:WOS:001306670500001)】；

基金：This study was supported by the Guangdong Basic and Applied Basic Research Foundation (2022A1515110960) and the National Natural Science Foundation of China (31870374, 31570398).

语种：英文

外文关键词：PEG-6000; Sphagneticola trilobata; hybrid; biological invasion; abscisic acid

摘要：Invasive species and their hybrids with native species threaten biodiversity. However, there are few reports on the drought stress adaptability of invasive species Sphagneticola trilobata (L.) Pruski and its hybrid with native species S. calendulacea. In this study, relative water content (RWC), abscisic acid (ABA), reactive oxygen species, antioxidant capacity, and photosynthetic capacity were measured in the hybrid and its parents under drought stress (13% PEG-6000). Under drought stress, the ABA content and RWC in S. trilobata were the highest. RWC decreased by 28% in S. trilobata, 41% in S. calendulacea, and 33% in the hybrid. Activities of the antioxidant enzymes in S. trilobata were the highest, and the accumulation of malondialdehyde (MDA) was the lowest (4.3 mu g g-1), while it was the highest in S. calendulacea (6.9 mu g g(-1)). The maximum photochemical efficiency (Fv/Fm) of S. calendulacea was the lowest (0.71), and it was the highest in S. trilobata (7.5) at 8 h under drought stress. The results suggest that the drought resistance of the hybrid was weaker than that of S. trilobata but stronger than that of S. calendulacea. Therefore, the survival of S. calendulacea may be threatened by both the invasive species S. trilobata and the hybrid.