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Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (2): 289-299.doi: 10.16420/j.issn.0513-353x.2020-0388

• Research Papers • Previous Articles     Next Articles

The Relationship Between Changes of Endogenous Hormones and Cell Wall Metabolism of Common Bean During Bean Development

XIE Guofang1,2, LIU Na2, SONG Yi2, GUAN Chunhua2, ZHANG Mingsheng1,*()   

  1. 1Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education),Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering(CICMEAB),College of Life Sciences/Institute of Agro-bioengineering,Guizhou University,Guiyang 550025,China
    2Food and Pharmaceutical Engineering Institute/Guizhou Engineering Research Center for Fruit Processing,Guiyang University,Guiyang 550005,China
  • Received:2020-07-01 Revised:2020-11-03 Online:2021-02-25 Published:2021-03-09
  • Contact: ZHANG Mingsheng E-mail:mshzhang@163.com

Abstract:

The cell wall metabolism of fresh common bean(Phaseolus vulgaris L.)seriously affects the edible quality. The contents of endogenous hormones,the main components and enzymes related to cell wall metabolism were analyzed in four developmental stages in beans‘Dabaibang’,and the relationship between endogenous hormones and cell wall metabolism was analyzed. The results showed that the content of GA3 and 6-BA decreased,the content of ethylene(ET)and JA decreased firstly and then increased during the development of pods. The pods was mainly in elongation growth before the 10th day after anthesis,and the pods was mainly in thickening growth after the 10th day after anthesis. Sucrose synthetase(SuSy)promoted sucrose synthesis before 10 days after anthesis. Sucrose content decreased and cellulose content increased with the decrease of SuSy and cellulase(Cx)activity. G-lignin deposition in xylem at 5 days after anthesis,G-lignin and S-lignin were deposited in phloem,gradually deepened and diffused to both sides after the 10th day after anthersis. S-lignin was only deposited in phloem. The high phenylalanine ammonia lyase(PAL)activity provided the substrate for lignin biosynthesis at the 5th day after anthesis,and then the increase of cinnamyl alcohol dehydrogenase(CAD)activity promoted lignin synthesis,the increase of superoxide dismutase(SOD)activity promoted the conversion of $\mathrm{O}_{2}^{\overline{·}}$ to H2O2,and the polymerization of lignin with peroxidase(POD)activity. Polygalacturonase(PG)activity,sodium-carbonate-soluble-pectin(SSP)and water-soluble-pectin(WSP)content increased firstly and then decreased,pectin methylesterase(PME)activity decreased,chelator-soluble-pectin(CSP)content decreased firstly and then increased. The correlation analysis showed that JA positively regulated pod development and cellulose metabolism,while ET,GA3,6-BA and ABA were the opposite. JA regulates lignin polymerization by inhibiting the conversion of $\mathrm{O}_{2}^{\overline{·}}$ to H2O2 and POD activity. ET,GA3,6-BA and ABA promoted lignin synthesis by enhancing PAL and POD activity. IAA and SA were involved in regulation of pectin metabolism.

Key words: Phaseolus vulgaris, bean development, endogenous hormones, cell wall metabolism

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