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Current Issues in Molecular Biology is published by MDPI from Volume 43 Issue 1 (2021). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Caister Press.
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Review

Genes and Pathways Induced in Early Response to Defoliation in Rice Seedlings

by
Shuangyan Chen
1,
Xiu-Qing Li
2,
Aiguo Zhao
1,4,
Lijuan Wang
1,4,
Xiaofeng Li
1,4,
Qingyun Shi
3,
Ming Chen
3,
Juan Guo
1,4,
Jichong Zhang
1,4,
Dongmei Qi
1 and
Gongshe Liu
1,*
1
Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
2
Molecular Genetics Laboratory, Potato Research Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, P.O. Box 20280, Fredericton, NB E3B 4Z7, Canada
3
The National Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
4
Graduate School of the Chinese Academy of Sciences, Beijing 100093, China
*
Author to whom correspondence should be addressed.
Curr. Issues Mol. Biol. 2009, 11(2), 81-100; https://doi.org/10.21775/cimb.011.081
Submission received: 7 January 2009 / Revised: 7 March 2009 / Accepted: 16 May 2009 / Published: 1 July 2009
Versions Notes

Abstract

How plant gene expression responds to grazing defoliation is critical for plant re-growth, survival, and composition in the natural and dairy farming grassland environments. Rice, with genome sequence available, was used as a model plant to study grazing-induced pathway selections. When seedlings were 18 cm in height, the top 12 cm was removed by simulated grazing. The gene expression activities within 2 to 24 hours in the remaining aboveground tissues were profiled using the Affymetrix Rice GeneChips and RT-qPCR. The seedlings responded to grazing by immediately adjusting their global gene expression, e.g., enhancing anaerobic respiration, starch-to-sugar conversion, sucrose synthesis, and sugar transport. The results suggest that (1) remaining aboveground tissues used anaerobic respiration as an emergency measure for energy/substrates supply; (2) Sink tissues reduced its demand after 2 h; (3) Sucrose synthesis enhancement around the 24th hour is likely driven by shoot re-growth. In total, the expression activity of 466 genes, involved in signal transduction, miRNA regulation, cell wall modification, metabolism, hormone synthesis, and molecule transporters, had been significantly changed at least twofold. These genes and their biochemical pathways identified provide insights into how plants respond to grazing at the molecular physiology level.
Keywords: Rice; grazing-induced pathway selections; gene expression; Affymetrix Rice GeneChips; RT-qPCR; global gene expression Rice; grazing-induced pathway selections; gene expression; Affymetrix Rice GeneChips; RT-qPCR; global gene expression

Share and Cite

MDPI and ACS Style

Chen, S.; Li, X.-Q.; Zhao, A.; Wang, L.; Li, X.; Shi, Q.; Chen, M.; Guo, J.; Zhang, J.; Qi, D.; et al. Genes and Pathways Induced in Early Response to Defoliation in Rice Seedlings. Curr. Issues Mol. Biol. 2009, 11, 81-100. https://doi.org/10.21775/cimb.011.081

AMA Style

Chen S, Li X-Q, Zhao A, Wang L, Li X, Shi Q, Chen M, Guo J, Zhang J, Qi D, et al. Genes and Pathways Induced in Early Response to Defoliation in Rice Seedlings. Current Issues in Molecular Biology. 2009; 11(2):81-100. https://doi.org/10.21775/cimb.011.081

Chicago/Turabian Style

Chen, Shuangyan, Xiu-Qing Li, Aiguo Zhao, Lijuan Wang, Xiaofeng Li, Qingyun Shi, Ming Chen, Juan Guo, Jichong Zhang, Dongmei Qi, and et al. 2009. "Genes and Pathways Induced in Early Response to Defoliation in Rice Seedlings" Current Issues in Molecular Biology 11, no. 2: 81-100. https://doi.org/10.21775/cimb.011.081

APA Style

Chen, S., Li, X.-Q., Zhao, A., Wang, L., Li, X., Shi, Q., Chen, M., Guo, J., Zhang, J., Qi, D., & Liu, G. (2009). Genes and Pathways Induced in Early Response to Defoliation in Rice Seedlings. Current Issues in Molecular Biology, 11(2), 81-100. https://doi.org/10.21775/cimb.011.081

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