Plant Tolerance under Environmental Stress: Metabolites Perspective

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Plant-Crop Biology and Biochemistry".

Deadline for manuscript submissions: closed (30 March 2024) | Viewed by 1595

Special Issue Editors


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Guest Editor
Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
Interests: cross-talk between phytohormone signaling pathways in cold-stored peach fruit

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Guest Editor
Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
Interests: postharvest physiology of fruits and vegetables; chilling injury of fruit and vegetables; molecular biology of horticultural products quality
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Special Issue Information

Dear Colleagues,

Environmental stress is a common global problem that significantly limits crop development and yields. The growth rate of horticultural products has increased considerably in recent years. However, they are susceptible to environmental stress, resulting in quality deterioration and even decay, which led to great losses of horticultural products worldwide. Scientists have done a lot of work on crop responses to environmental stress and have made positive progress in terms of cold signaling perception and transduction, interactions between different plant hormones, transcription, and metabolic regulation. The study of environmental stress of plant products has entered the era of metabolites perspective. It is necessary to carry out systematic research from physiological, molecular, genetic, multi-omics, and other perspectives to explore the response mechanism mediated by phytohormones in plant products.

Dr. Yuquan Duan
Dr. Yaoyao Zhao
Guest Editors

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Keywords

  • environmental stress
  • metabolites perspective
  • response mechanism

Published Papers (2 papers)

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Research

12 pages, 5307 KiB  
Article
Exogenous Gibberellic Acid Ameliorates Chilling Injury in Peach (Prunus persica L.) by Improving the Antioxidant System
by Haixin Sun, Xuena Rang, Haonan Han, Zhenhao Pei, Jingyi Zhao, Zhifeng Zhu, Jiangkuo Li, Peng Zhang, Yaoyao Zhao and Yuquan Duan
Agronomy 2024, 14(4), 816; https://doi.org/10.3390/agronomy14040816 - 14 Apr 2024
Viewed by 594
Abstract
Currently, several studies have demonstrated that cold stress can cause the accumulation of reactive oxygen species (ROS) in fruit. However, little is known about the roles of gibberellic acid (GA3) on the antioxidant system in the mitochondria of fruit. To explore [...] Read more.
Currently, several studies have demonstrated that cold stress can cause the accumulation of reactive oxygen species (ROS) in fruit. However, little is known about the roles of gibberellic acid (GA3) on the antioxidant system in the mitochondria of fruit. To explore the molecular basis of GA3 interference with the chilling tolerance of fruit, ‘Jinqiuhongmi’ peach fruit was treated with 0.1 mmol L−1 GA3 after harvest. Exogenous GA3 treatment relieved the chilling injury of postharvest peach fruit with a lower cold injury index and higher antioxidant level. In addition, GA3 delayed the senescence of peaches by reducing the firmness, respiratory action, and ethylene production. The antioxidant enzyme activities were elevated, including superoxide dismutase (SOD) and catalase (CAT). Moreover, GA3-treated peaches exhibited lower hydrogen peroxide (H2O2) and malondialdehyde (MDA) in comparison with the control. These results showed that the application of 0.1 mmol L−1 of GA3 enhanced the chilling resistance of peach fruit by regulating the antioxidant system. Full article
(This article belongs to the Special Issue Plant Tolerance under Environmental Stress: Metabolites Perspective)
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15 pages, 2880 KiB  
Article
Pollen Viability, and the Photosynthetic and Enzymatic Responses of Cowpea (Vigna unguiculata (L.) Walp., Fabaceae) in the Face of Rising Air Temperature: A Problem for Food Safety
by Juliane Rafaele Alves Barros, Tatiane Cezario dos Santos, Elioenai Gomes Freire Silva, Weslley Oliveira da Silva, Miguel Julio Machado Guimarães and Francislene Angelotti
Agronomy 2024, 14(3), 463; https://doi.org/10.3390/agronomy14030463 - 26 Feb 2024
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Abstract
Rising temperature affects agricultural production, causing food insecurity. Thus, the objective of this study was to evaluate how increased temperature influences pollen viability, photosynthetic and enzymatic responses, and their consequences on the final yield of cowpea cultivars. The cultivars BRS Acauã, BRS Guariba, [...] Read more.
Rising temperature affects agricultural production, causing food insecurity. Thus, the objective of this study was to evaluate how increased temperature influences pollen viability, photosynthetic and enzymatic responses, and their consequences on the final yield of cowpea cultivars. The cultivars BRS Acauã, BRS Guariba, BRS Gurguéia, and BRS Pajeú were used, kept in growth chambers under two temperature regimes: 24.8–30.8–37.8 °C and 20–26–33 °C. The cultivars BRS Acauã, BRS Guariba, and BRS Pajeú showed prolonged flowering and greater flower abortion, at 23.58%, 34.71%, and 25.55%, respectively, under an increase of 4.8 °C in temperature. This increase also reduced the viability of BRS Acauã and BRS Pajeú pollen by 34 and 7%, respectively. Heating increased stomatal opening and transpiration but reduced chlorophyll content. The enzymatic response varied according to cultivars and temperature. Changes in photosynthetic and enzymatic activities contribute to reducing pollen viability and productivity. BRS Acauã was the most affected, with an 82% reduction in the number of seeds and a 70% reduction in production. BRS Gurguéia maintained its production, even with an increase of 4.8 °C, and can be selected as a cultivar with the potential to tolerate high temperatures as it maintained pollen viability, with less flower abortion, with the synchrony of physiological and biochemical responses and, consequently, greater production. Full article
(This article belongs to the Special Issue Plant Tolerance under Environmental Stress: Metabolites Perspective)
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