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Plant Resilience Mechanisms for Coping with Environmental Stresses: Paving the Path to a Sustainable Future

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: 28 June 2024 | Viewed by 3358

Special Issue Editor

Dr. Silvia Celletti

E-Mail Website
Guest Editor
Department of Life Sciences, University of Siena, 53100 Siena, Italy
Interests: physiological, biochemical, and molecular responses of plants to abiotic stresses such as deficiencies of natural resources (e.g., nutrients and water) or salinity; analysis of the effects of biofertilizers (i.e., biochar and wood distillate) on the soil–plant system; the use of solid and liquid byproducts of hydrothermal carbonization (HTC) in soilless culture systems; analysis of the impact of bioplastics on plant yield and soil quality
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plants have evolved mechanisms to cope with environmental stressors such as temperature extremes, drought, salinity, and pathogens. These mechanisms include stress signaling pathways activated by molecules such as abscisic acid (ABA), which regulate water loss and trigger the synthesis of protective proteins. Plants also defend themselves against pathogens through antimicrobial compounds, strengthened cell walls, and the activation of defense-related genes. Systemic acquired resistance (SAR) provides long-lasting immunity. Additionally, plants undergo physiological and morphological changes, such as the development of deeper roots or altered growth patterns, to adapt to stress.

Manuscripts that aim to understand these responses to improve crop resilience, biodiversity conservation, and mitigation of climate change impacts are welcome. IJMS accepts contributions related to molecular science, encouraging clinical or pure model studies with biomolecular experiments. Submission formats can include both original research papers and up-to-date review articles.

Dr. Silvia Celletti
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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • antioxidants
  • drought tolerance
  • growth patterns
  • morphological adaptations
  • physiological changes
  • pathogen defense
  • protective proteins
  • root system development
  • stomatal closure
  • stress signaling pathways

Published Papers (3 papers)

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12 pages, 1050 KiB  
Review
The Roles of Circadian Clock Genes in Plant Temperature Stress Responses
by Juna Jang, Sora Lee, Jeong-Il Kim, Sichul Lee and Jin A. Kim
Int. J. Mol. Sci. 2024, 25(2), 918; https://doi.org/10.3390/ijms25020918 - 11 Jan 2024
Viewed by 971
Abstract
Plants monitor day length and memorize changes in temperature signals throughout the day, creating circadian rhythms that support the timely control of physiological and metabolic processes. The DEHYDRATION-RESPONSE ELEMENT-BINDING PROTEIN 1/C-REPEAT BINDING FACTOR (DREB1/CBF) transcription factors are known as master regulators [...] Read more.
Plants monitor day length and memorize changes in temperature signals throughout the day, creating circadian rhythms that support the timely control of physiological and metabolic processes. The DEHYDRATION-RESPONSE ELEMENT-BINDING PROTEIN 1/C-REPEAT BINDING FACTOR (DREB1/CBF) transcription factors are known as master regulators for the acquisition of cold stress tolerance, whereas PHYTOCHROME INTERACTING FACTOR 4 (PIF4) is involved in plant adaptation to heat stress through thermomorphogenesis. Recent studies have shown that circadian clock genes control plant responses to temperature. Temperature-responsive transcriptomes show a diurnal cycle and peak expression levels at specific times of throughout the day. Circadian clock genes play essential roles in allowing plants to maintain homeostasis by accommodating temperature changes within the normal temperature range or by altering protein properties and morphogenesis at the cellular level for plant survival and growth under temperature stress conditions. Recent studies revealed that the central oscillator genes CIRCADIAN CLOCK ASSOCIATED 1/LATE ELONGATED HYPOCOTYL (CCA1/LHY) and PSEUDO-RESPONSE REGULATOR5/7/9 (PRR5/7/9), as well as the EVENING COMPLEX (EC) genes REVEILLE4/REVEILLE8 (REV4/REV8), were involved in the DREB1 pathway of the cold signaling transcription factor and regulated the thermomorphogenesis gene PIF4. Further studies showed that another central oscillator, TIMING OF CAB EXPRESSION 1 (TOC1), and the regulatory protein ZEITLUPE (ZTL) are also involved. These studies led to attempts to utilize circadian clock genes for the acquisition of temperature-stress resistance in crops. In this review, we highlight circadian rhythm regulation and the clock genes involved in plant responses to temperature changes, as well as strategies for plant survival in a rapidly changing global climate. Full article
(This article belongs to the Special Issue Plant Resilience Mechanisms for Coping with Environmental Stresses: Paving the Path to a Sustainable Future)
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21 pages, 16032 KiB  
Article
Transcriptome Dynamics of Brassica juncea Leaves in Response to Omnivorous Beet Armyworm (Spodoptera exigua, Hübner)
by Rui Xia, Liai Xu, Jiaojiao Hao, Lili Zhang, Shanyi Wang, Zhujun Zhu and Youjian Yu
Int. J. Mol. Sci. 2023, 24(23), 16690; https://doi.org/10.3390/ijms242316690 - 24 Nov 2023
Viewed by 712
Abstract
Cruciferous plants manufacture glucosinolates (GSLs) as special and important defense compounds against insects. However, how insect feeding induces glucosinolates in Brassica to mediate insect resistance, and how plants regulate the strength of anti-insect defense response during insect feeding, remains unclear. Here, mustard ( [...] Read more.
Cruciferous plants manufacture glucosinolates (GSLs) as special and important defense compounds against insects. However, how insect feeding induces glucosinolates in Brassica to mediate insect resistance, and how plants regulate the strength of anti-insect defense response during insect feeding, remains unclear. Here, mustard (Brassica juncea), a widely cultivated Brassica plant, and beet armyworm (Spodoptera exigua), an economically important polyphagous pest of many crops, were used to analyze the changes in GSLs and transcriptome of Brassica during insect feeding, thereby revealing the plant–insect interaction in Brassica plants. The results showed that the content of GSLs began to significantly increase after 48 h of herbivory by S. exigua, with sinigrin as the main component. Transcriptome analysis showed that a total of 8940 DEGs were identified in mustard challenged with beet armyworm larvae. The functional enrichment results revealed that the pathways related to the biosynthesis of glucosinolate and jasmonic acid were significantly enriched by upregulated DEGs, suggesting that mustard might provide a defense against herbivory by inducing JA biosynthesis and then promoting GSL accumulation. Surprisingly, genes regulating JA catabolism and inactivation were also activated, and both JA signaling repressors (JAZs and JAMs) and activators (MYCs and NACs) were upregulated during herbivory. Taken together, our results indicate that the accumulation of GSLs regulated by JA signaling, and the regulation of active and inactive JA compound conversion, as well as the activation of JA signaling repressors and activators, collectively control the anti-insect defense response and avoid over-stunted growth in mustard during insect feeding. Full article
(This article belongs to the Special Issue Plant Resilience Mechanisms for Coping with Environmental Stresses: Paving the Path to a Sustainable Future)
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18 pages, 40100 KiB  
Article
Characterization of the FLA Gene Family in Tomato (Solanum lycopersicum L.) and the Expression Analysis of SlFLAs in Response to Hormone and Abiotic Stresses
by Kangding Yao, Yandong Yao, Zhiqi Ding, Xuejuan Pan, Yongqi Zheng, Yi Huang, Zhuohui Zhang, Ailing Li, Chunlei Wang, Changxia Li and Weibiao Liao
Int. J. Mol. Sci. 2023, 24(22), 16063; https://doi.org/10.3390/ijms242216063 - 07 Nov 2023
Cited by 2 | Viewed by 881
Abstract
Fasciclin-like arabinogalactan proteins (FLAs), a subclass of arabinogalactan proteins (AGPs), participate in mediating plant growth, development, and response to abiotic stress. However, the characterization and function of FLAs in tomato are currently unknown. In this study, members of the tomato FLA family are [...] Read more.
Fasciclin-like arabinogalactan proteins (FLAs), a subclass of arabinogalactan proteins (AGPs), participate in mediating plant growth, development, and response to abiotic stress. However, the characterization and function of FLAs in tomato are currently unknown. In this study, members of the tomato FLA family are characterized and analyzed in relation to their response to phytohormonal and abiotic stresses. The results show that a total of 24 FLA members were characterized in tomato. The structural domain analysis showed that these members have a high protein similarity. The expression profiles of different tissues indicated that the genes of most members of the tomato FLA gene family are highly expressed in roots, but to a lower extent in fruits. qRT-PCR analysis revealed that all 24 tomato FLA genes are responsive to ABA and MeJA. SlFLAs showed a positive response to salt and cold stress. SlFLA1, SlFLA12, and SlFLA14 are significantly induced under darkness. SlFLA1 and SlFLA3 are significantly induced under drought stress. This study provides a basis for a further understanding of the role of tomato FLA homologous genes in plant response to abiotic stress and lays the foundation for further research on the function of FLAs in tomato. Full article
(This article belongs to the Special Issue Plant Resilience Mechanisms for Coping with Environmental Stresses: Paving the Path to a Sustainable Future)
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