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Agronomy
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Abiotic Stress Tolerance in Brassica Species: From Molecular Laboratories to...
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Abiotic Stress Tolerance in Brassica Species: From Molecular Laboratories to Field Trials

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

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 4598

Special Issue Editor

Dr. Sheng Chen

E-Mail Website
Guest Editor
The UWA Institute of Agriculture, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
Interests: plant genomics; molecular breeding; plant abiotic stress physiology; genome evolution
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Climate change is a big issue affecting crop production worldwide, and Brassica crops are currently facing severe challenges caused by various abiotic stressors, including drought, heat, frost, salinity stresses, and limited nutritional use efficiency, etc. Nowadays, much of the current research is focused on the response to a single stressor under controlled environments and does not reflect actual on-paddock exposure to multiple stressors. Heat and drought stress, for example, is increasing during the growing season due to climate change, and warm winters and spring heat waves are promoting new interactions between multiple stressors. This Special Issue will incorporate studies from molecular laboratories to field trials, address abiotic stress tolerance in Brassica species for a better understanding of current phenomics and genomics achievements, and facilitate breeding in Brassica species.

Dr. Sheng Chen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Brassica
  • phenomics
  • genomics
  • abiotic stress tolerance
  • drought
  • thermotolerance
  • salinity
  • nutrition use efficiency

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Published Papers (2 papers)

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Research

20 pages, 6558 KiB  
Article
Genome-Wide Identification and Expression Analysis of BrATGs and Their Different Roles in Response to Abiotic Stresses in Chinese Cabbage
by Yuanfeng Hu, Ming Zhang, Fengrui Yin, Xiaoqun Cao, Shuying Fan, Caijun Wu and Xufeng Xiao
Agronomy 2022, 12(12), 2976; https://doi.org/10.3390/agronomy12122976 - 26 Nov 2022
Cited by 3 | Viewed by 1770
Abstract
Autophagy is an important degradation pathway that maintains cellular homeostasis in living organisms and plays a key role in plant fitness and immunity. To date, more than 30 autophagy-related genes (ATGs) have been identified in model plants such as Arabidopsis. However, [...] Read more.
Autophagy is an important degradation pathway that maintains cellular homeostasis in living organisms and plays a key role in plant fitness and immunity. To date, more than 30 autophagy-related genes (ATGs) have been identified in model plants such as Arabidopsis. However, autophagy in Chinese cabbage, the largest cultivated vegetable crop in China, has scarcely been studied. We identified 64 Chinese cabbage autophagy-associated genes, named BrATGs, at the genome-wide level. The majority of the BrATGs were highly conserved over a long evolutionary period, and the expression patterns indicated that BrATGs were most highly expressed in the healing tissues and flowers. Furthermore, BrATGs responded to the stresses of the heavy metal Cd, drought, salt, and low and high temperatures to varying degrees. Among them, BrATG8c/8j was specifically induced in response to drastic temperature changes; BrATG4c was upregulated only in response to drought and salt stress; and BrATG8f/10/VTI12C was highly expressed only in response to Cd stress. This work will advance the understanding of the molecular mechanisms underlying the abiotic stress response in Chinese cabbage. Full article
(This article belongs to the Special Issue Abiotic Stress Tolerance in Brassica Species: From Molecular Laboratories to Field Trials)
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16 pages, 2782 KiB  
Article
Seed Characteristics Affect Low-Temperature Stress Tolerance Performance of Rapeseed (Brassica napus L.) during Seed Germination and Seedling Emergence Stages
by Tao Luo, Ziwei Sheng, Chunni Zhang, Qin Li, Xiaoyan Liu, Zhaojie Qu and Zhenghua Xu
Agronomy 2022, 12(8), 1969; https://doi.org/10.3390/agronomy12081969 - 20 Aug 2022
Cited by 6 | Viewed by 2223
Abstract
Screening and breeding elite varieties with rapid germination and uniform seedling emergence under low temperature is an effective strategy to deal with the cold climate occurring under late sowing conditions in the Yangtze River basin. This study focused on the performance of seven [...] Read more.
Screening and breeding elite varieties with rapid germination and uniform seedling emergence under low temperature is an effective strategy to deal with the cold climate occurring under late sowing conditions in the Yangtze River basin. This study focused on the performance of seven functional traits, including percentage of germination, percentage of emergence, mean germination time, mean emergence time, total seedling length, total dry weight, and seedling vigor index of 436 natural rapeseed populations under normal-temperature (25/20 °C) and low-temperature (15/10 °C) conditions. Furthermore, ten genotypes were screened to verify their low-temperature tolerance based on cultivar traits in a pot experiment. The results show that the germination- and emergence-related functional traits of rapeseed genotypes exhibit rich genotypic diversity in response to low-temperature stress; the variation among these traits ranged from 1–25% under normal-temperature and 10–49% under low-temperature conditions. Variation in seed characteristics also affected the capacity for low-temperature tolerance in the process of seed germination and seedling emergence, and could explain 22% of the total variance for low-temperature stress tolerance indices. There existed high correlations between the stress tolerance index of total dry weight (STI_TDW) and thousand-seed weight, and between the stress tolerance index of emergence percentage (STI_PE) and oil content. The contents of erucic acid, glucosinolate, and eicosenoic acid were positively correlated with the stress tolerance index of mean germination time (STI_MGT) and mean emergence time (STI_MET). The D-CRITIC (distance-based intercriteria correlation) weight method was selected in this experiment to calculate each variety’s comprehensive low-temperature stress tolerance index by integrating the standard deviation and distance correlation coefficient of each index. The genotypes with large comprehensive low-temperature stress tolerance index also had higher low-temperature stress tolerance index of biomass and yield in the pot experiment, indicating that the comprehensive low-temperature stress tolerance index has high reliability and applicability. This study could provide a theoretical basis for the utilization of low-temperature-tolerant germplasm resources, as well as a reference for the cold resistance and yield stability under late- and direct-sowing conditions of rapeseed in the Yangtze River basin and other similar environments around the world. Full article
(This article belongs to the Special Issue Abiotic Stress Tolerance in Brassica Species: From Molecular Laboratories to Field Trials)
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