Department Of Botany

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Subject: search.filters.subject.Jasmonic acid

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Now showing 1 - 4 of 4
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    Understanding plant-plant growth-promoting rhizobacteria (PGPR) interactions for inducing plant defense
    (Elsevier, 2023-04-21T00:00:00) Seth, Kunal; Vyas, Pallavi; Deora, Sandhya; Gupta, Amit Kumar; Meena, Mukesh; Swapnil, Prashant; Harish
    Rhizobacteria fostering plant growth have received considerable attention in modern agriculture as they are capable of enhancing growth of the plants and are also a chemical fertilizer replacement. Besides enhancing growth, many PGPRs are recognized to induce plant defenses while in contact with the host plant. The plants have a nonspecific and broad-spectrum immune system to protect themselves from the diverse array of phytopathogens compared to innate immune system of animals. Depending on the type of interaction, plants cope with the invader attack through the activation of different defense mechanisms. In locally and systemically induced resistance responses, the main activator is salicylic acid (SA). However, studies have demonstrated that both ethylene and jasmonic acid (JA) are the main signaling molecules for induced systemic resistance (ISR) mediated by the rhizobacteria. For generating systemic resistance, different rhizobacteria exploit different mechanisms like some activate SAR (SA-dependent) pathway, while others activate ISR (ethylene/JA-dependent) pathway. Interestingly, coactivation of the ethylene/JA-dependent and the salicylic acid-dependent pathways has been shown to result in a synergistic effect on the acquired induced resistance. Few reports have suggested toward adaptive immune responses in plants and existence of immunological memory. The importance of PGPR in initiating plant defense against biotic stress, plant-PGPR interactions, and the PGPR significance in defense priming are discussed in this chapter. � 2023 Elsevier Inc. All rights reserved.
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    Analysis of TCP Transcription Factors Revealed Potential Roles in Plant Growth and Fusarium oxysporum f.sp. cubense Resistance in Banana (cv. Rasthali)
    (Springer, 2022-07-05T00:00:00) Chaturvedi, Siddhant; Khan, Shahirina; Usharani, T.R.; Tiwari, Siddharth
    The TCP transcription factor gene family is highly conserved among the plant species. It plays a major role in the regulation of flower symmetry, cell division, and development of leaf, fibre, and nodule in the plants by controlling the synthesis of various plant hormones. Banana is a major staple crop in the world. However, Fusarium oxysporum f. sp. cubense (Foc) infection is a major threat to banana production. The role of TCP gene family during the Foc infection is not explored till now. Herein, a total of 27 non-redundant TCP (MaTCP) gene sequences were retrieved from the banana genome and analysed for structural characteristics, phylogenetic correlation, subcellular, and chromosomal localizations. Phylogenetic analysis showed that the MaTCP proteins were highly conserved among different species and found to be the closest relative of the Oryza sativa and Zea mays. Promoter analysis of the TCP sequences showed that the cis-acting regulatory elements are associated with various stresses and environmental and hormonal signals. The higher transcript accumulation in developing tissues (fruit finger, leaves, and stem) than of mature tissues (peel and pulp) showed a significant role of MaTCP in banana (cv. Rasthali) growth and development. Further, higher expression of the certain MaTCPs in Foc race 1-infected root (MaTCP2, MaTCP4, MaTCP6) and leaf (MaTCP9 and MaTCP11) tissues of Rasthali indicated their promising role during Fusarium infection. This study will underpin the facet of TCP transcription factors on the development of biotic (Foc) stress resistance in banana. � 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
  • No Thumbnail Available
    Item
    Understanding plant-plant growth-promoting rhizobacteria (PGPR) interactions for inducing plant defense
    (Elsevier, 2023-04-21T00:00:00) Seth, Kunal; Vyas, Pallavi; Deora, Sandhya; Gupta, Amit Kumar; Meena, Mukesh; Swapnil, Prashant; Harish
    Rhizobacteria fostering plant growth have received considerable attention in modern agriculture as they are capable of enhancing growth of the plants and are also a chemical fertilizer replacement. Besides enhancing growth, many PGPRs are recognized to induce plant defenses while in contact with the host plant. The plants have a nonspecific and broad-spectrum immune system to protect themselves from the diverse array of phytopathogens compared to innate immune system of animals. Depending on the type of interaction, plants cope with the invader attack through the activation of different defense mechanisms. In locally and systemically induced resistance responses, the main activator is salicylic acid (SA). However, studies have demonstrated that both ethylene and jasmonic acid (JA) are the main signaling molecules for induced systemic resistance (ISR) mediated by the rhizobacteria. For generating systemic resistance, different rhizobacteria exploit different mechanisms like some activate SAR (SA-dependent) pathway, while others activate ISR (ethylene/JA-dependent) pathway. Interestingly, coactivation of the ethylene/JA-dependent and the salicylic acid-dependent pathways has been shown to result in a synergistic effect on the acquired induced resistance. Few reports have suggested toward adaptive immune responses in plants and existence of immunological memory. The importance of PGPR in initiating plant defense against biotic stress, plant-PGPR interactions, and the PGPR significance in defense priming are discussed in this chapter. � 2023 Elsevier Inc. All rights reserved.
  • No Thumbnail Available
    Item
    Analysis of TCP Transcription Factors Revealed Potential Roles in Plant Growth and Fusarium oxysporum f.sp. cubense Resistance in Banana (cv. Rasthali)
    (Springer, 2022-07-05T00:00:00) Chaturvedi, Siddhant; Khan, Shahirina; Usharani, T.R.; Tiwari, Siddharth
    The TCP transcription factor gene family is highly conserved among the plant species. It plays a major role in the regulation of flower symmetry, cell division, and development of leaf, fibre, and nodule in the plants by controlling the synthesis of various plant hormones. Banana is a major staple crop in the world. However, Fusarium oxysporum f. sp. cubense (Foc) infection is a major threat to banana production. The role of TCP gene family during the Foc infection is not explored till now. Herein, a total of 27 non-redundant TCP (MaTCP) gene sequences were retrieved from the banana genome and analysed for structural characteristics, phylogenetic correlation, subcellular, and chromosomal localizations. Phylogenetic analysis showed that the MaTCP proteins were highly conserved among different species and found to be the closest relative of the Oryza sativa and Zea mays. Promoter analysis of the TCP sequences showed that the cis-acting regulatory elements are associated with various stresses and environmental and hormonal signals. The higher transcript accumulation in developing tissues (fruit finger, leaves, and stem) than of mature tissues (peel and pulp) showed a significant role of MaTCP in banana (cv. Rasthali) growth and development. Further, higher expression of the certain MaTCPs in Foc race 1-infected root (MaTCP2, MaTCP4, MaTCP6) and leaf (MaTCP9 and MaTCP11) tissues of Rasthali indicated their promising role during Fusarium infection. This study will underpin the facet of TCP transcription factors on the development of biotic (Foc) stress resistance in banana. � 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.