Deciphering salt tolerance in tetraploid honeysuckle (Lonicera japonica Thunb.) from ion homeostasis, water balance and antioxidant defense
Yan, Kun1; Cui, Jinxin1; Zhi, Yibo1; Su, Hongyan1,2,4; Yu, Shunyang3; Zhou, Shiwei1
Source PublicationPLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN0981-9428
2023-02-01
Volume195Pages:266-274
KeywordChlorophyll fluorescence Non-invasive micro -test Oxidative stress Phenolic synthesis
DOI10.1016/j.plaphy.2023.01.013
Corresponding AuthorYan, Kun(kyan@ldu.edu.cn) ; Su, Hongyan(suhongyan66@126.com)
AbstractPolyploid 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.
Funding OrganizationShandong 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
Indexed BySCI
Language英语
WOS KeywordSALINITY TOLERANCE ; DELAYED FLUORESCENCE ; PHOTOSYSTEM-II ; AGRICULTURE ; STRESS ; L. ; FLAVONOIDS ; PHYSIOLOGY ; MACHINERY ; INCREASES
WOS Research AreaPlant Sciences
WOS IDWOS:000923680100001
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/32631
Collection中国科学院海岸带环境过程与生态修复重点实验室
中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Corresponding AuthorYan, Kun; Su, Hongyan
Affiliation1.Ludong Univ, Sch Agr, Yantai 264025, Peoples R China
2.Ludong Univ, Inst Ecol Garden, Yantai 264025, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
4.Ludong Univ, Sch Agr, Hongqizhong Rd 186, Yantai 264025, Peoples R China
Recommended Citation
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.
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