Light Deficiency Inhibits Growth by Affecting Photosynthesis Efficiency as well as JA and Ethylene Signaling in Endangered Plant Magnolia sinostellata
Lu, Danying (Zhejiang Agriculture and Forestry University. College of Landscape and Architecture)
Liu, Bin (Centre de Recerca en Agrigenòmica)
Ren, Mingjie (Zhejiang Agriculture and Forestry University. College of Landscape and Architecture)
Wu, Chao (Zhejiang Agriculture and Forestry University. College of Landscape and Architecture)
Ma, Jingjing (Zhejiang Agriculture and Forestry University. College of Landscape and Architecture)
Shen, Yamei (Zhejiang Agriculture and Forestry University. College of Landscape and Architecture)

Data:	2021
Resum:	The endangered plant Magnolia sinostellata largely grows in the understory of forest and suffers light deficiency stress. It is generally recognized that the interaction between plant development and growth environment is intricate; however, the underlying molecular regulatory pathways by which light deficiency induced growth inhibition remain obscure. To understand the physiological and molecular mechanisms of plant response to shading caused light deficiency, we performed photosynthesis efficiency analysis and comparative transcriptome analysis in M. sinostellata leaves, which were subjected to shading treatments of different durations. Most of the parameters relevant to the photosynthesis systems were altered as the result of light deficiency treatment, which was also confirmed by the transcriptome analysis. Gene Ontology and KEGG pathway enrichment analyses illustrated that most of differential expression genes (DEGs) were enriched in photosynthesis-related pathways. Light deficiency may have accelerated leaf abscission by impacting the photosynthesis efficiency and hormone signaling. Further, shading could repress the expression of stress responsive transcription factors and R-genes, which confer disease resistance. This study provides valuable insight into light deficiency-induced molecular regulatory pathways in M. sinostellata and offers a theoretical basis for conservation and cultivation improvements of Magnolia and other endangered woody plants.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Light deficiency ; RNA-seq ; Gene regulation ; Magnolia sinostellata ; Endangered species
Publicat a:	Plants, Vol. 10, Issue 11 (October 2021) , art. 2261, ISSN 2223-7747

DOI: 10.3390/plants10112261
PMID: 34834626

21 p, 3.8 MB

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