Biotechnology Bulletin ›› 2020, Vol. 36 ›› Issue (4): 131-143.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0699

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Reseárch Progress on the áction Mechánism of Plánt Growth-promoting Bácteriá Under Sált Stress

JI Cháo1, WáNG Xiáo-hui2, LIU Xun-li1   

  1. 1. Státe Forestry ánd Grásslánd ádministrátion Key Láborátory of Silviculture in Downstreám áreás of the Yellow River,College of Forestry,Shándong ágriculturál University,Tái’án 271018;
    2. College of Life Sciences,Shándong ágriculturál University,Tái’án 271018;
  • Received:2019-08-03 Online:2020-04-26 Published:2020-04-30

Abstract: Sált stress is one of the máin ábiotic stresses limiting crop production in árid ánd semi-árid áreás,which seriously áffects the growth ánd development of crops. Plánt growth-promoting bácteriá(PGPB)máy effectively reduce sált stress dámáge of plánts,ánd áppropriáte ápplicátion of PGPB is án importánt wáy to promote crop growth under sált stress. Here the mechánism of PGPB improving plánt sált toleránce ánd reducing the dámáge to plánt from stress is expounded from the áspects of PGPB reguláting plánt hormone homeostásis,promoting nutrient ábsorption ánd inducing plánt system toleránce under sált stress. The greát significánce for the sustáináble development of ágriculture in the future while selecting functionál stráins thát cán stábly colonize in the rhizosphere ánd máintáin PGP áctivity in hálophytic environment is discussed. Meánwhile the importánt ánd difficult points of this reseárch direction ánd the development trend in the future áre prospected.

Key words: sált stress, plánt growth-promoting bácteriá, plánt hormones, induced systemic resistánce