Articulating beneficial rhizobacteria-mediated plant defenses through induced systemic resistance: A review

• Published in: Pedosphere Vol. 33; no. 4; pp. 556 - 566
• Main Authors: RABARI, Aniruddh, RUPARELIA, Janki, JHA, Chaitanya Kumar, SAYYED, Riyaz Z., MITRA, Debasis, PRIYADARSHINI, Ankita, SENAPATI, Ansuman, PANNEERSELVAM, Periyasamy, DAS MOHAPATRA, Pradeep K.
• Format: Journal Article
• Language: English
• Published: Department of Microbiology and Biotechnology,Gujarat University,Ahmedabad,Gujarat 380006(India) 01.08.2023; Professor A.K.B.Environment Conservation Centre,Raiganj University,Raiganj,West Bengal 733134(India); Microbiology Department,Gujarat Arts and Science College,Ellisbridge,Ahmedabad,Gujarat 380006(India)%Microbiology Department,Gujarat Arts and Science College,Ellisbridge,Ahmedabad,Gujarat 380006(India)%Department of Microbiology,PSGVP Mandal's Arts,Science and Commerce College,Maharashtra,Shahada 425409(India)%Department of Microbiology,Raiganj University,Raiganj,Uttar Dinajpur West Bengal 733134(India)%Crop Production Division,Indian Council of Agriculture Research(ICAR)—National Rice Research Institute,Cuttack,Odisha 753006(India)%Department of Microbiology,Raiganj University,Raiganj,Uttar Dinajpur West Bengal 733134(India)
• Subjects: systemic acquired resistance; signaling pathways; gene silencing; local acquired resistance; secondary induced resistances; biocontrol; phytohormone
• ISSN: 1002-0160
• DOI: 10.1016/j.pedsph.2022.10.003

Induced systemic resistance(ISR)is a mechanism by which certain plant beneficial rhizobacteria and fungi produce immunity,which can stimulate crop growth and resilience against various phytopathogens,insects,and parasites.These beneficial rhizobacteria and fungi improve plant performance by regulating hormone signaling,including salicylic acid(SA),jasmonic acid(JA),prosystemin,pathogenesis-related gene l,and ethylene(ET)pathways,which activate the gene expression of ISR,the synthesis of secondary metabolites,various enzymes,and volatile compounds that ultimately induce defense mechanisms in plant.To protect themselves from disease,plants have various advanced defense mechanisms in which local acquired resistance,systemic gene silencing,systemic wound response,systemic acquired resistance(SAR),and ISR are involved.Several rhizobacteria activate the SA-dependent SAR pathway by producing SA at the root's surface.In contrast,other rhizobacteria can activate different signaling pathways independent of SA(SA-independent ISR pathways)such as those dependent on JA and ET signaling.The main objective of this review is to provide insight into the types of induced resistance utilized for plant defense.Further to this,the genetic approaches used to suppress disease-causing genes,i.e.,RNA interference and antisense RNA,which are still underutilized in sustainable agriculture,along with the current vision for virus-induced gene silencing are also discussed.