Response of Tropical Crops to Biotic and Abiotic Stresses

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Fruit Production Systems".

Deadline for manuscript submissions: closed (20 December 2025) | Viewed by 923

Special Issue Editors


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Guest Editor
Instituto Federal de Educação, Ciência e Tecnologia Baiano (IF Baiano), Santa Inês, BA, Brazil
Interests: abiotic stresses; digital agriculture; effect of climate change on plant development; geoprocessing applied to agricultural sciences

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Guest Editor
Brazilian Agricultural Research Corporation (Embrapa Semiárido), Petrolina, PE, Brazil
Interests: plant development; plant phytopathology; climate change; plant genetic improvement

Special Issue Information

Dear Colleagues,

Biotic and abiotic stresses are important in limiting the production of fruits and vegetable crops located in tropical environments. Under natural conditions, plants are frequently subjected to stresses. Moreover, the way in which the soil and climate act on their development will vary depending on their genetic makeup. Conceptually, stress can be defined as any condition caused by factors that tend to alter equilibrium. Thus, any environmental factor that influences plant growth and/or development can be a potential stress factor.

The main characteristic of tropical regions is the high level of solar radiation, resulting in high temperatures, humidity, and rainfall, which vary throughout the year. Within agricultural systems in these regions, plants are subject to a set of biotic and abiotic factors, characterized as combined stresses, and their behavior reflects the interaction between them.

In this Special Issue, we welcome articles (original research papers, reviews, opinions, perspectives, and methods) that explore horticultural crops located in tropical areas, as well as tropical plant responses when these crops are subjected to biotic and abiotic stresses. Tropical horticultural crops, including tropical fruit trees and tropical vegetables, are important components of tropical crops. We hope that studies submitted to this Special Issue will outline these crops’ responses regarding their physiological, growth and development, productivity, biochemical, and genetic parameters.

Prof. Dr. Miguel Julio Machado Guimarães
Dr. Francislene Angelotti
Guest Editors

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Keywords

  • climate change
  • abiotic stresses in plants
  • selection of cultivars

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Published Papers (1 paper)

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Research

20 pages, 1453 KB  
Article
Enhancement of Cold Tolerance by Drought Stress in Pitaya (Hylocereus undatus)
by Li Wang, Xue Zhang, Zhaoqing Li, Xiaotong Fang, Enquan Wang, Yu Wang and Xuming Huang
Horticulturae 2026, 12(3), 272; https://doi.org/10.3390/horticulturae12030272 - 26 Feb 2026
Viewed by 539
Abstract
Pitaya (Hylocereus undatus) is a typical Crassulacean Acid Metabolism (CAM) plant with strong drought tolerance but high sensitivity to low temperatures. In this study, the responses of pitaya cultivated in the karst areas of Guizhou Province in southwest China to drought [...] Read more.
Pitaya (Hylocereus undatus) is a typical Crassulacean Acid Metabolism (CAM) plant with strong drought tolerance but high sensitivity to low temperatures. In this study, the responses of pitaya cultivated in the karst areas of Guizhou Province in southwest China to drought and low temperature were examined in winter seasons. The stems of ‘Zihonglong’ pitaya were used as materials to investigate the physiological responses to cold temperatures of pitaya stems under different water conditions, so as to understand the effects of drought stress on the response to low temperatures. The results showed that the severity of chilling injury in pitaya stems was influenced by cold degree and duration and temperature variation. Under sustained low-temperature conditions, the lower the temperature and the longer the duration, the more severe the chilling injury, particularly at 4 °C and below. Drastic temperature rise after exposure to low temperature of 5 °C aggravated the damage, especially when the temperature rise exceeded 10 °C. Compared to normally irrigated plants, those subjected to drought pretreatment exhibited milder chilling injury and higher survival rates under a temperature shift from 5 to 20 °C. The drought-treated pitaya stems had significantly lower membrane leakage and malondialdehyde (MDA) and reactive oxygen species (ROS) contents compared with the well-watered control under different temperature increases starting from 5 °C. Drought significantly reduced soluble sugars and soluble proteins but increased proline under a temperature shift from 5 to 20 °C. It significantly enhanced the activities of catalase (CAT) and ascorbate peroxidase (APX) under temperature shifts from 5 to 10 or 20 °C, but had no significant effect on peroxidase (POD) and superoxide dismutase (SOD). Drought also significantly increased ascorbic acid (ASA) content but significantly reduced glutathione (GSH). It is concluded that a drastic post-cold temperature rise causes more severe damage than the cold temperature itself. Drought pretreatment increases the chilling tolerance of pitaya stems. This effect involves an enhanced ASA-GSH cycle, which strengthens ROS scavenging and prevents membrane damage. Full article
(This article belongs to the Special Issue Response of Tropical Crops to Biotic and Abiotic Stresses)
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