Ministry of Agriculture and Rural Affairs

government📍 Beijing, China
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Alpha-gal Syndrome Publications
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Alpha-gal Syndrome Researchers

Associated Institutions

Chinese Academy of Tropical Agricultural Sciences
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Chinese Center For Disease Control and Prevention
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National Animal Husbandry Service
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Research Center for Rural Economy
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Chinese Academy of Agricultural Engineering
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Alpha-gal Syndrome Researchers

Liu X
3 publications • h-index: 7
Lv H
2 publications • h-index: 22
Lin Z
2 publications • h-index: 12
Bassiony A
1 publication • h-index: 2
Yan K
1 publication • h-index: 4
Peng Q
1 publication • h-index: 27
Zhou M
1 publication • h-index: 25
Fu J
1 publication • h-index: 24
Shi J
1 publication • h-index: 32

Publications

Integrative approaches unravelling tea drought alleviation mechanisms primed by carbonyl volatiles and signal peptide.

Bassiony A, Sun S, Yan K, Peng Q, Zhou M, et al.
Plant physiology and biochemistry : PPB •

Drought stress (DS) significantly hampers the growth and productivity of tea plants, necessitating effective strategies to enhance their resilience. This study comprehensively investigated the mechanisms of carbonyl volatiles-methyl jasmonate (MeJA) and cis-3-hexenyl acetate (cis-3-HAC) and signal peptide CLAVATA3/EMBRYO-SURROUNDING REGION-RELATED 25 (CLE25) promotion DS resistance using integrative metabolomics and proteomics strategy. Total pigment content decreased, while soluble sugar and proteins increased significantly under DS and further increased after foliar inducement of CLE25, MeJA, and cis-3-HAC. Gallated catechins and amino acids exhibited apparent decreased under DS, especially EGCG (24.6-13.4 mg g) and theanine (10.66-3.78 mg g), but significantly mitigated by CLE25 inducement. Antioxidant enzymes activity, such as catalase (CAT), jumped from 23.1 to 48.2 and further boosted to 118.8 Ugmin FW with CLE25. Proteomic analysis revealed massive increased in stress tolerance proteins, particularly dehydrins and heat shock proteins, rising by >50.0 % with CLE25 inducement and the expression levels of peroxidase (POX), superoxide dismutase (SOD), α-galactosidase (α-GAL), carboxypeptidases (CPs), and transaldolase (TAL) exhibited higher after inducement. Furthermore, stress signaling-related proteins were in-depth explored, especially thioredoxin proteins; sucrose non-fermenting 1-related protein kinase 2 (SnRK2) was novelly verified in activating abscisic acid (ABA) responding. Differences among drought resistance mechanisms after carbonyl volatile and CLE25 treatments were comprehensively studied. The integration of metabolite and protein levels provided a comprehensive illustration of tea DS tolerance mechanisms and offered promising promotion strategies through foliar application of MeJA, cis-3-HAC, and CLE25.

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Alkaline α-galactosidase 2 (CsAGA2) plays a pivotal role in mediating source-sink communication in cucumber.

Liu H, Liu X, Zhao Y, Nie J, Yao X, et al.
Plant physiology •

Sugars are necessary for plant growth and fruit development. Cucumber (Cucumis sativus L.) transports sugars, mainly raffinose family oligosaccharides (RFOs), in the vascular bundle. As the dominant sugars in cucumber fruit, glucose and fructose are derived from sucrose, which is the product of RFO hydrolysis by α-galactosidase (α-Gal). Here, we characterized the cucumber alkaline α-galactosidase 2 (CsAGA2) gene and found that CsAGA2 has undergone human selection during cucumber domestication. Further experiments showed that the expression of CsAGA2 increases gradually during fruit development, especially in fruit vasculature. In CsAGA2-RNA interference (RNAi) lines, fruit growth was delayed because of lower hexose production in the peduncle and fruit main vascular bundle (MVB). In contrast, CsAGA2-overexpressing (OE) plants displayed bigger fruits. Functional enrichment analysis of transcriptional data indicated that genes related to sugar metabolism, cell wall metabolism, and hormone signaling were significantly downregulated in the peduncle and fruit MVBs of CsAGA2-RNAi plants. Moreover, downregulation of CsAGA2 also caused negative feedback regulation on source leaves, which was shown by reduced photosynthetic efficiency, fewer plasmodesmata at the surface between mesophyll cell and intermediary cell (IC) or between IC and sieve element, and downregulated gene expression and enzyme activities related to phloem loading, as well as decreased sugar production and exportation from leaves and petioles. The opposite trend was observed in CsAGA2-OE lines. Overall, we conclude that CsAGA2 is essential for cucumber fruit set and development through mediation of sugar communication between sink strength and source activity.

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