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Ethylene Signaling in Plants: Introspection

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Plant signaling: Understanding the molecular crosstalk

Abstract

Ethylene is the simplest unsaturated hydrocarbon gas produced in most plants that regulates a number of biochemical processes. Ethylene regulates a wide array of developmental processes, but its precise role in the regulation of these processes is still not clear. Ethylene’s role as a signal molecule depends on the cell response to its changing concentrations and the processing of this information in the form of physiological responses in the target cell. Ethylene is perceived by a family of ER-membrane-bound receptors encoded by the ethylene response 1 (ETR1) gene, and these receptors transduce the ethylene signal. Other ethylene receptors such as ERS1, ERS2, EIN4, ETR1, and ETR2 act as negative regulators via constitutive triple response 1 (CTR1) gene. The CTR1 is presumed to show similarities with Raf, a mitogen-activated protein kinase kinase kinase (MAPKKK) and thus is thought to function like Raf, in a typical MAPK cascade. It has been demonstrated that CTR1 binds ER membrane via ETR1 or by a direct association with ERS1 and ETR2 during ethylene signaling. Ethylene is thought to regulate several aspects of plant growth involving associations with other plant hormones primarily auxins and gibberellins.

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Authors and Affiliations

  1. Plant Physiology and Biochemistry Research Laboratory, Department of Botany, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India

    Syed Sabhi Ahmad, Waseem Shahri, Riyaz Ahmad Dar & Inayatullah Tahir

  2. P.G. Programme in Bioresources, Department of Botany, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India

    Shiekh Tajamul Islam

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  1. Syed Sabhi Ahmad
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  2. Waseem Shahri
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Correspondence to Inayatullah Tahir .

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  1. Universiti Putra Malaysia, Selangor, Malaysia

    Khalid Rehman Hakeem

  2. Department of Bioresources, University of Kashmir, Srinagar, Jammu und Kashmir, India

    Reiaz Ul Rehman

  3. Department of Botany, University of Kashmir, Srinagar, Jammu und Kashmir, India

    Inayatullah Tahir

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Ahmad, S.S., Shahri, W., Islam, S.T., Dar, R.A., Tahir, I. (2014). Ethylene Signaling in Plants: Introspection. In: Hakeem, K., Rehman, R., Tahir, I. (eds) Plant signaling: Understanding the molecular crosstalk. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1542-4_17

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