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Deciphering salt tolerance in tetraploid honeysuckle (Lonicera japonica Thunb.) from ion homeostasis, water balance and antioxidant defense

文献类型：期刊论文

作者Yan, Kun4; Cui, Jinxin4; Zhi, Yibo4; Su, Hongyan1,3,4; Yu, Shunyang2; Zhou, Shiwei4
刊名PLANT PHYSIOLOGY AND BIOCHEMISTRY
出版日期2023-02-01
卷号195页码:266-274
ISSN号0981-9428
关键词Chlorophyll fluorescence Non-invasive micro -test Oxidative stress Phenolic synthesis
DOI10.1016/j.plaphy.2023.01.013
通讯作者Yan, Kun(kyan@ldu.edu.cn) ; Su, Hongyan(suhongyan66@126.com)
英文摘要Polyploid plants are usually salt tolerant, but the underlying mechanisms remain fragmental. This study aimed to dissect salt resistance of tetraploid honeysuckle (Lonicera japonica Thunb.) from ion balance, osmotic adjustment and antioxidant defense by contrasting with its autodiploid through pot experiments. Less salt-induced reduction in leaf and root biomass confirmed higher tolerance in tetraploid honeysuckle, and moreover, its greater stability of photosynthetic apparatus was verified by mild influence on delayed chlorophyll fluorescence transients. Compared with the diploid, greater root Na+ exclusion helped alleviate salt-induced decrease in leaf K+/Na+ for maintaining ion balance in tetraploid honeysuckle, and relied on Na+/H+ antiporter activity, because their difference of root Na+ exclusion disappeared after applying a specific inhibitor of Na+/H+ antiporter. Lower reduction in leaf relative water content suggested higher tolerance to osmotic pressure in tetraploid honeysuckle under salt stress, which hardly resulted from osmotic adjustment given the similar decrease extent of leaf osmotic potential with that in the diploid. In contrast to significant elevated leaf lipid peroxidation and superoxide dismutase and ascorbate peroxidase activities in the diploid, no obvious changes in them suggested that tetra-ploid honeysuckle never suffered salt-induced oxidative stress. According to more accumulated leaf chlorogenic acid and phenolics and greater elevated leaf phenylalanine ammonia-lyase activity and transcription, leaf phenolic synthesis was enhanced greater in tetraploid honeysuckle upon salt stress, which might serve to prevent oxidative threat by consuming reducing power. In conclusion, polyploidy enhanced salt tolerance in honeysuckle by maintaining ion homeostasis and water balance and preventing oxidative stress.
WOS关键词SALINITY TOLERANCE ; DELAYED FLUORESCENCE ; PHOTOSYSTEM-II ; AGRICULTURE ; STRESS ; L. ; FLAVONOIDS ; PHYSIOLOGY ; MACHINERY ; INCREASES
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000923680100001
资助机构Shandong Provincial Natural Science Foundation ; National Natural Science Foundation of China ; Yantai Science and Technology Innovation Development Plan ; Scientific Instrument Developing Project of the Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/32630]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
通讯作者Yan, Kun; Su, Hongyan
作者单位1.Ludong Univ, Sch Agr, Hongqizhong Rd 186, Yantai 264025, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Ludong Univ, Inst Ecol Garden, Yantai 264025, Peoples R China
4.Ludong Univ, Sch Agr, Yantai 264025, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Kun,Cui, Jinxin,Zhi, Yibo,et al. Deciphering salt tolerance in tetraploid honeysuckle (Lonicera japonica Thunb.) from ion homeostasis, water balance and antioxidant defense[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY,2023,195:266-274.
APA Yan, Kun,Cui, Jinxin,Zhi, Yibo,Su, Hongyan,Yu, Shunyang,&Zhou, Shiwei.(2023).Deciphering salt tolerance in tetraploid honeysuckle (Lonicera japonica Thunb.) from ion homeostasis, water balance and antioxidant defense.PLANT PHYSIOLOGY AND BIOCHEMISTRY,195,266-274.
MLA Yan, Kun,et al."Deciphering salt tolerance in tetraploid honeysuckle (Lonicera japonica Thunb.) from ion homeostasis, water balance and antioxidant defense".PLANT PHYSIOLOGY AND BIOCHEMISTRY 195(2023):266-274.

入库方式： OAI收割

来源：烟台海岸带研究所

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