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Biotic and Abiotic Stress Responses of Vegetable Crops

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 20 January 2026 | Viewed by 191

Special Issue Editor


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Guest Editor
Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Yuanmingyuan West Road No. 2, Haidian District, Beijing 100193, China
Interests: vegetable; root microorganisms; stress tolerance

Special Issue Information

Dear Colleagues,

Vegetables are crucial for human health. As the global population continues to grow, the importance of vegetable crops is becoming increasingly prominent. Currently, vegetable cultivation is mainly carried out in two ways: open-field cultivation and protected-environment cultivation. In open-field cultivation, due to the immobile nature of plants, vegetable crops are forced to face various biotic (e.g., soil- and air-borne diseases) and abiotic stresses (e.g., salt and alkali stress, drought, and heavy metal toxicity). In protected-environment cultivation, although more suitable growing conditions are artificially created, vegetable crops still face various biotic and abiotic stresses (e.g., high or low temperatures) due to the limitations of control methods and high costs. In the context of increasingly extreme global climate conditions, these stresses on vegetable crops have become more commonplace. Deciphering the biotic and abiotic stress responses of vegetable crops is essential for improving the resistance of vegetable crops, ensuring the stability and sustainability of agricultural production. This Special Issue aims to focus on the biotic and abiotic stress responses of vegetable crops, covering multidisciplinary content from molecular biology to field management, including (1) the physiological, molecular, and genetic mechanisms of vegetable crops in response to biotic stresses (e.g., the invasion of pathogenic microorganisms like fungi, bacteria, and viruses, damage caused by insects and other pests, and plant–plant competition or synergistic interactions) and abiotic stresses (e.g., drought, salt–alkali stress, extreme temperatures, and heavy metal stress); (2) resistance breeding and biotechnology (such as transgenic and gene editing technologies, molecular marker-assisted breeding, development and application of stress-tolerant varieties); and (3) ecology and management strategies for stress adversity (such as crop rotation, use of natural enemies, rational fertilization, irrigation management, etc., to reduce the degree of stress on crops).

Prof. Dr. Yongqiang Tian
Guest Editor

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Keywords

  • vegetable crops
  • biotic stress
  • abiotic stress
  • physiological responses
  • molecular mechanisms
  • genetic mechanisms
  • resistance breeding
  • resistance biotechnology
  • management strategies

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Published Papers (1 paper)

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Research

10 pages, 4102 KiB  
Article
Silencing of the Alkaline α-Galactosidase Gene CsAGA1 Impairs Root and Gall Development in Cucumber upon Meloidogyne incognita Infection
by Tingting Ji, Xingyi Wang, Xueyun Wang, Lihong Gao, Yongqiang Tian and Si Ma
Int. J. Mol. Sci. 2025, 26(14), 6686; https://doi.org/10.3390/ijms26146686 - 11 Jul 2025
Abstract
Meloidogyne incognita (M. incognita) is a devastating root-knot nematode that parasitizes a broad range of crop species by inducing the formation of giant cells (GCs) in host roots, thereby facilitating nutrient acquisition. This process profoundly alters host sugar metabolism, yet the [...] Read more.
Meloidogyne incognita (M. incognita) is a devastating root-knot nematode that parasitizes a broad range of crop species by inducing the formation of giant cells (GCs) in host roots, thereby facilitating nutrient acquisition. This process profoundly alters host sugar metabolism, yet the molecular regulators underlying sugar dynamics during infection remain poorly understood in cucumber. In this study, we investigated the role of the cucumber alkaline α-galactosidase gene (CsAGA1) in M. incognita-infected roots. Histochemical analysis of proCsAGA1::GUS transgenic lines demonstrated that CsAGA1 is spatially localized to nematode-induced feeding sites, with its expression markedly induced in GCs and phloem-adjacent tissues during infection. Functional analyses revealed that silencing CsAGA1 impaired root and gall development. CsAGA1-silenced plants exhibited increased gall numbers (per gram root) but significantly reduced root growth and smaller galls compared to controls. These results indicate that CsAGA1 is required for proper gall expansion and root growth during M. incognita infection. This study provides novel insight into the sugar-mediated regulation of host–nematode interactions, and CsAGA1 emerges as a potential target for the biological control of M. incognita. Full article
(This article belongs to the Special Issue Biotic and Abiotic Stress Responses of Vegetable Crops)
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