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Ethylene: A Master Regulator of Salinity Stress Tolerance in Plants

1
Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary
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Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary
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Department of Biotechnology, Visva-Bharati Central University, Santiniketan, West Bengal 731235, India
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School of Biotechnology, Gautam Buddha University, Greater Noida, Uttar Pradesh 201312, India
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Department of Integrated Plant Protection, Plant Protection Institute, Faculty of Horticultural Sciences, Szent István University, Páter Károly utca 1, H-2100 Gödöllo, Hungary
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Department of Botany, University of Delhi, New Delhi 110007, India
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Louvain Institute of Biomolecular Science, Catholic University of Louvain, B-1348 Louvain-la-Neuve, Belgium
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Department of Plant Bioscience, Pusan National University, Miryang 50463, Korea
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Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
*
Authors to whom correspondence should be addressed.
Biomolecules 2020, 10(6), 959; https://doi.org/10.3390/biom10060959
Received: 31 May 2020 / Revised: 22 June 2020 / Accepted: 22 June 2020 / Published: 25 June 2020
(This article belongs to the Special Issue Phytohormones 2020)
Salinity stress is one of the major threats to agricultural productivity across the globe. Research in the past three decades, therefore, has focused on analyzing the effects of salinity stress on the plants. Evidence gathered over the years supports the role of ethylene as a key regulator of salinity stress tolerance in plants. This gaseous plant hormone regulates many vital cellular processes starting from seed germination to photosynthesis for maintaining the plants’ growth and yield under salinity stress. Ethylene modulates salinity stress responses largely via maintaining the homeostasis of Na+/K+, nutrients, and reactive oxygen species (ROS) by inducing antioxidant defense in addition to elevating the assimilation of nitrates and sulfates. Moreover, a cross-talk of ethylene signaling with other phytohormones has also been observed, which collectively regulate the salinity stress responses in plants. The present review provides a comprehensive update on the prospects of ethylene signaling and its cross-talk with other phytohormones to regulate salinity stress tolerance in plants. View Full-Text
Keywords: ROS; ethylene; antioxidants; salinity stress; photosynthesis; programmed cell death; seed germination; hormone cross-talk ROS; ethylene; antioxidants; salinity stress; photosynthesis; programmed cell death; seed germination; hormone cross-talk
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Riyazuddin, R.; Verma, R.; Singh, K.; Nisha, N.; Keisham, M.; Bhati, K.K.; Kim, S.T.; Gupta, R. Ethylene: A Master Regulator of Salinity Stress Tolerance in Plants. Biomolecules 2020, 10, 959.

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