The Correlation of Stress Response and Organ Development in Horticultural Crops

A topical collection in Horticulturae (ISSN 2311-7524). This collection belongs to the section "Biotic and Abiotic Stress".

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Editors


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Collection Editor
State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, China
Interests: horticultural crop genetics and germplasm enhancement; secondary metabolism; abiotic stress; horticultural crop evolutionary genomics and domestication
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Collection Editor
College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Interests: environmental stress; plant physiology and biochemistry; plant growth regulators; stress response and resistance

Topical Collection Information

Dear Colleagues,

Multiple environmental stresses adversely affect organ development and genetic variation. This is not only a fundamental scientific issue, but is also a crucial issue for ensuring food security and sustainable agriculture. Abiotic stress greatly inhibits crop growth and reduces yields. On the other hand, plants exposed to stress undergo changes in their metabolism and limit organ development in order to prevent the deleterious effects of the stress. It is important to explore the cross-talk between stress response and growth, which will contribute to understanding this regulatory network, which, in turn, is critical for resetting the balance between stress resistance and growth in order to engineer stress-resistant and high-yield crops.

The Correlation of Stress Response and Organ Development in Horticultural Crops, will focus on new developments in our understanding of how plant balance growth and the stress response contribute to their adaptation and tolerance. 

We invite researchers to contribute both original research articles and reviews to this Collection.

Prof. Dr. Aisheng Xiong
Dr. Mengyao Li
Dr. Sheng Shu
Collection Editors

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Keywords

  • environmental stresses
  • plant development
  • plant physiology and biochemistry
  • transcriptional regulation
  • plant-environment interactions

Published Papers (6 papers)

2023

Jump to: 2022

14 pages, 4253 KiB  
Article
Effects of Exogenous 24-Epibrassinolide Leaves Spraying Application on Chlorophyll Accumulation and Gene Expression Profiles of Chlorophyll Metabolism in Celery
by Chen Chen, Li-Xiang Wang, Meng-Yao Li, Guo-Fei Tan, Er-Jin Zhang, Pei-Zhuo Liu, Hui Liu, Jian-Ping Tao, Sheng Shu, Jian-Hua Zhou and Ai-Sheng Xiong
Horticulturae 2023, 9(12), 1279; https://doi.org/10.3390/horticulturae9121279 - 28 Nov 2023
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Abstract
Celery is an important leaf vegetable crop in Apiaceae, of which the petiole and leaf blade are the main edible parts. The content and proportion of photosynthetic pigments, mainly chlorophyll, have an important effect on the growth and quality of celery. As a [...] Read more.
Celery is an important leaf vegetable crop in Apiaceae, of which the petiole and leaf blade are the main edible parts. The content and proportion of photosynthetic pigments, mainly chlorophyll, have an important effect on the growth and quality of celery. As a brassinosteroid (BR) plant hormone with high physiological activity, 24-epibrassinolide (24-EBL) has the physiological functions of promoting chlorophyll accumulation and delaying leaf senescence. To investigate the effects of 24-EBL treatment on chlorophyll accumulation at different growth stages of celery, celery plants (variety Ningqin NO. 1) were treated from 45~59 days after sowing (DAS), at intervals of 7 days, with two different concentrations of 24-EBL: 1.04 × 10−6 mol·L−1 and 1.67 × 10−6 mol·L−1. The content of chlorophyll and the expression levels of genes related to its metabolism were determined in celery leaf blades and petioles at three different stages (52, 59, 66 DAS). In the first stage (52 DAS), 1.04 × 10−6 mol·L−1 treatment of 24-EBL increased the expression levels of genes related to chlorophyll biosynthesis (AgHEML, AgCHLG, and AgCAO) to promote the accumulation of chlorophyll in leaf blades. During the second and third stages (59 and 66 DAS, respectively), 1.67 × 10−6 mol·L−1 24-EBL treatment induced the expression levels of genes related to chlorophyll cyclic regeneration (AgCLH) and inhibited the up-regulation of genes related to chlorophyll degradation (AgNYC, AgHCAR, and AgPPH) to promote chlorophyll (especially chlorophyll b) accumulation. These treatments regulated the ratio of chlorophyll a content to chlorophyll b content and changed the leaf color of the celery. The results show that leaf spraying with an appropriate concentration of 24-EBL can facilitate chlorophyll synthesis by promoting chlorophyll synthesis and cycling-related gene expression levels and increase chlorophyll content in the leaves of celery. This study provides a reference for exploring the specific function of 24-EBL in regulating chlorophyll content during the growth and development of celery. Full article
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2022

Jump to: 2023

17 pages, 5031 KiB  
Article
MAPK Gene Family in Lactuca sativa: Genome-Wide Identification, Regulatory Network, and Expression Patterns in Stem Development and Stress Responses
by Ying Huang, Jiageng Du, Yihua Liu, Xue Cao, Zhenning Liu and Mengyao Li
Horticulturae 2022, 8(11), 1087; https://doi.org/10.3390/horticulturae8111087 - 17 Nov 2022
Cited by 3 | Viewed by 1355
Abstract
Mitogen-activated protein kinases (MAPKs) play essential roles in the process of stress response and plant growth and development. MAPK family genes have been identified in many plant species. In this study, 18 LsMAPK genes were identified in lettuce (Lactuca sativa). The [...] Read more.
Mitogen-activated protein kinases (MAPKs) play essential roles in the process of stress response and plant growth and development. MAPK family genes have been identified in many plant species. In this study, 18 LsMAPK genes were identified in lettuce (Lactuca sativa). The LsMAPK members were divided into Group A, B, C, and D by phylogenetic tree analysis among Arabidopsis, rice, and lettuce. Cis-elements, which relate to abiotic stress, phytohormone response, and transcription factor binding site, were identified to exist in the promoter region of LsMAPK genes. Chromosomal location analysis showed the LsMAPK genes were distributed on eight chromosomes except chromosome 6. Interaction network analysis showed that LsMAPKs could interact with MAPK kinase (MAPKK), protein-tyrosine-phosphatase (PTP), and transcription factors (WRKY, bZIP). Quantitative reverse transcription PCR (qRT-PCR) showed that LsMAPK genes were induced by different abiotic stresses, hormone response, and stem enlargement. The comprehensive identification and characterization of LsMAPK genes in stem lettuce will lay a theoretical foundation for the functional analysis of LsMAPK genes and advance our knowledge of the regulatory mechanism of MAPK genes in plants. Full article
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10 pages, 2097 KiB  
Article
Changes in Carotenoid Concentration and Expression of Carotenoid Biosynthesis Genes in Daucus carota Taproots in Response to Increased Salinity
by Yu-Han Zhao, Yuan-Jie Deng, Yuan-Hua Wang, Ying-Rui Lou, Ling-Feng He, Hui Liu, Tong Li, Zhi-Ming Yan, Jing Zhuang and Ai-Sheng Xiong
Horticulturae 2022, 8(7), 650; https://doi.org/10.3390/horticulturae8070650 - 17 Jul 2022
Cited by 4 | Viewed by 1952
Abstract
Studying the changes of carotenoids in the taproot of carrots under salt treatment is helpful to probe the salt stress response mechanism of carrots. The carotenoid concentration and the expression profiles of 10 carotenoid-related genes were determined in two carrot cultivars with different [...] Read more.
Studying the changes of carotenoids in the taproot of carrots under salt treatment is helpful to probe the salt stress response mechanism of carrots. The carotenoid concentration and the expression profiles of 10 carotenoid-related genes were determined in two carrot cultivars with different taproot colors. Under salt stress, the biosynthesis of carotenoids in the taproot of both ‘KRD’ and ‘BHJS’ was activated. RT-qPCR manifested that the expression levels of DcPSY1, DcPSY2, DcZDS1, DcCRT1 and DcCRT2 increased significantly in both ‘KRD’ and BHJS’ under salt stress, but DcCHXE transcripts decreased and DcPDS transcripts maintained a basal level compared to that of the control. In the taproot of ‘KRD’, the expression level of DcLCYB, DcLCYE and DcCHXB1 climbed dramatically. However, there was no significant change in the taproot of ‘BHJS’. The study showed that salt stress can stimulate the biosynthesis of carotenoids. The accumulation of lutein in the taproots of ‘KRD’ and ‘BHJS’ may be mainly attributed to the variation in DcLCYE and DcCHXB1 transcripts. The increase in β-carotene accumulation is speculated to increase salt tolerance. Full article
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12 pages, 685 KiB  
Article
Spirulina platensis Foliar Spraying Curcuma longa Has Improved Growth, Yield, and Curcuminoid Biosynthesis Gene Expression, as Well as Curcuminoid Accumulation
by Munirah F. Al Dayel and Fadia El Sherif
Horticulturae 2022, 8(6), 469; https://doi.org/10.3390/horticulturae8060469 - 25 May 2022
Cited by 2 | Viewed by 2216
Abstract
The application of Spirulina platensis aqueous extract (SAE) in foliar spraying has been shown to promote plant growth and yield, as well as to modify the compositions of bioactive chemicals in various plant species. Curcuma longa is an antioxidant-rich medicinal herb that is [...] Read more.
The application of Spirulina platensis aqueous extract (SAE) in foliar spraying has been shown to promote plant growth and yield, as well as to modify the compositions of bioactive chemicals in various plant species. Curcuma longa is an antioxidant-rich medicinal herb that is used as a spice and culinary additive. The application of a natural plant growth enhancer, SAE, to C. longa plants was used in this study to test the effect of SAE for increasing active chemical production. The effects of SAE on the growth, yield and chemical composition of C. longa were investigated. SAE boosted the C. longa growth, yield and curcuminoid content, with SAE at 2 g/L having the most impact. The CURS-1, -2, -3 and DCS genes were found to be differentially elevated by SAE treatments in this investigation. When the plant was sprayed with SAE at 2 g/L, the curcuminoid content (bisdemethoxycurcumin, dimethoxycurcumin and curcumin) increased, which corresponded with the curcuminoid gene’s expression level. Full article
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13 pages, 3491 KiB  
Article
Effects of Exogenous Phthalic Acid on Seed Germination, Root Physiological Characteristics, and Mineral Element Absorption of Watermelon
by Mengyao Li, Jiachang Xiao, Fengyun Lei, Kaimin Zheng, Wei Lu, Junying Ma, Maolin He and Yangxia Zheng
Horticulturae 2022, 8(3), 235; https://doi.org/10.3390/horticulturae8030235 - 09 Mar 2022
Cited by 3 | Viewed by 1844
Abstract
To understand the effect of exogenous PA on the watermelon root system, the watermelon variety ‘Zaojia 84–24’ was used as experimental material. This study investigated the effects of allelochemicals DIBP and DOP at varying different concentrations (0, 0.05, 0.1, 0.5, 1, and 4 [...] Read more.
To understand the effect of exogenous PA on the watermelon root system, the watermelon variety ‘Zaojia 84–24’ was used as experimental material. This study investigated the effects of allelochemicals DIBP and DOP at varying different concentrations (0, 0.05, 0.1, 0.5, 1, and 4 mmol·L−1) on the physiological characteristics and mineral content of watermelon roots. The results revealed that proper PA treatment concentrations (0.05~0.1 mmol·L−1) promoted seed germination, increased the number of RBCs and the survival rate of RBCs, and enhanced the activities of PME and dehydrogenase in watermelon roots. In addition, proper PA treatment concentrations (0.05~0.1 mmol·L−1) promoted the activities of SOD, POD, CAT, and NR in watermelon roots. The contents of MDA and soluble protein were increased at 0.05~4 mmol·L−1 PA. In addition, proper PA treatment concentrations promoted the absorption and accumulation of P, K, Ca, Fe, Cu, and Zn elements in watermelon roots. These results indicate that PA at a concentration of 0.05~0.5 mmol·L−1 can promote watermelon seed germination, improve antioxidant enzyme activity of watermelon roots, and maintain normal physiological activities of watermelon by affecting absorption and accumulation of mineral elements in the root system. Full article
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20 pages, 2290 KiB  
Review
Molecular and Metabolic Changes under Environmental Stresses: The Biosynthesis of Quality Components in Preharvest Tea Shoots
by Jianjun Liu, Beibei Wen, Xiaobo Liu, Yun Yang, Meifeng Li and Xiaojing Wang
Horticulturae 2022, 8(2), 173; https://doi.org/10.3390/horticulturae8020173 - 19 Feb 2022
Cited by 3 | Viewed by 2339
Abstract
Severe environments impose various abiotic stresses on tea plants. Although much is known about the physiological and biochemical responses of tea (Camellia sinensis L.) shoots under environmental stresses, little is known about how these stresses impact the biosynthesis of quality components. This [...] Read more.
Severe environments impose various abiotic stresses on tea plants. Although much is known about the physiological and biochemical responses of tea (Camellia sinensis L.) shoots under environmental stresses, little is known about how these stresses impact the biosynthesis of quality components. This review summarizes and analyzes the changes in molecular and quality components in tea shoots subjected to major environmental stresses during the past 20 years, including light (shade, blue light, green light, and UV-B), drought, high/low temperature, CO2, and salinity. These studies reveal that carbon and nitrogen metabolism is critical to the downstream biosynthesis of quality components. Based on the molecular responses of tea plants to stresses, a series of artificial methods have been suggested to treat the pre-harvest tea plants that are exposed to inhospitable environments to improve the quality components in shoots. Furthermore, many pleiotropic genes that are up- or down-regulated under both single and concurrent stresses were analyzed as the most effective genes for regulating multi-resistance and quality components. These findings deepen our understanding of how environmental stresses affect the quality components of tea, providing novel insights into strategies for balancing plant resistance, growth, and quality components in field-based cultivation and for breeding plants using pleiotropic genes. Full article
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