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Co-suppression in Pyropia yezoensis (Rhodophyta) Reveals the Role of PyLHCI in Light Harvesting and Generation Switch(1)
Zheng, Zhenbing1; He, Bangxiang1; Xie, Xiujun1; Wang, Guangce1,2
2020-11-24
Source PublicationJOURNAL OF PHYCOLOGY
ISSN0022-3646
Pages12
Corresponding AuthorWang, Guangce(gcwang@qdio.ac.cn)
AbstractThe red macroalga Pyropia yezoensis is an economically important seaweed widely cultured in Asian countries and is a model organism for molecular biological and commercial research. This species is unique in that it utilizes both phycobilisomes and transmembrane light-harvesting proteins as its antenna system. Here, one of the genes of P. yezoensis (PyLHCI) was selected for introduction into its genome to overexpress PyLHCI. However, the co-suppression phenomenon occurred. This is the first documentation of co-suppression in algae, in which it exhibits a different mechanism from that in higher plants. The transformant (T1) was demonstrated to have higher phycobilisomes and lower LHC binding pigments, resulting in a redder color, higher sensitivity to salt stress, smaller in size, and slower growth rate than the wildtype (WT). The photosynthetic performances of T1 and WT showed similar characteristics; however, P700 reduction was slower in T1. Most importantly, T1 could release a high percentage of carpospores in young blades to switch generation during its life cycle, which was rarely seen in WT. The co-suppression of PyLHCI revealed its key roles in light harvesting, stress resistance, and generation alternation (generation switch from gametophytes to sporophytes, and reproduction from asexual to sexual).
Keywordco‐ suppression generation switch LHCI life cycle Pyropia yezoensis
DOI10.1111/jpy.13073
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFD0901500] ; National Natural Science Foundation of China[41906105] ; National Natural Science Foundation of China[41606161] ; National Natural Science Foundation of China[41976097] ; China Postdoctoral Science Foundation[2019M652594]
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000591661200001
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/169175
Collection实验海洋生物学重点实验室
Corresponding AuthorWang, Guangce
Affiliation1.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Key Lab Expt Marine Biol, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zheng, Zhenbing,He, Bangxiang,Xie, Xiujun,et al. Co-suppression in Pyropia yezoensis (Rhodophyta) Reveals the Role of PyLHCI in Light Harvesting and Generation Switch(1)[J]. JOURNAL OF PHYCOLOGY,2020:12.
APA Zheng, Zhenbing,He, Bangxiang,Xie, Xiujun,&Wang, Guangce.(2020).Co-suppression in Pyropia yezoensis (Rhodophyta) Reveals the Role of PyLHCI in Light Harvesting and Generation Switch(1).JOURNAL OF PHYCOLOGY,12.
MLA Zheng, Zhenbing,et al."Co-suppression in Pyropia yezoensis (Rhodophyta) Reveals the Role of PyLHCI in Light Harvesting and Generation Switch(1)".JOURNAL OF PHYCOLOGY (2020):12.
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