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Agronomy
Special Issues
Bioactive Compounds for Plant Health and Protection
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Bioactive Compounds for Plant Health and Protection

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

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 1253

Special Issue Editors

Dr. Xiuxiu Sun

E-Mail Website
Guest Editor
United States Department of Agriculture, Agricultural Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, 64 Nowelo St., Hilo, HI 96720, USA
Interests: active packaging to reduce decay and prolong fruit shelf-life; value-added products development
Dr. Christopher Ference

E-Mail Website
Guest Editor
USDA, Agricultural Research Service, US Pacific Basin Agricultural Research Center, 64 Nowelo Street, Hilo, HI 96720, USA
Interests: plant protection; plant pathology; plant physiology

Special Issue Information

Dear Colleagues,

I am pleased to invite you to submit research papers, review articles, or short communications to the Agronomy Special Issue entitled “Bioactive Compounds for Plant Health and Protection”.

New plant protection techniques are being rapidly developed and employed to improve the health of plants with enhanced performance, quality, biotic and abiotic tolerance, and resistance. Bioactive compounds have been widely used for plant health improvement. I invite you to submit articles involving bioactive compounds and their application for the improvement of agricultural crops. These can include articles discussing how these compounds can contribute to meeting the challenges of the increasing demand, climate change, sustainability, and the reduction in environmental impact. In addition, traditional and novel techniques for the isolation, identification, and application of new compounds are welcome.

Dr. Xiuxiu Sun
Dr. Christopher Ference
Guest Editors

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

  • bioactivity
  • antimicrobial
  • crop protection
  • biotic
  • abiotic

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

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Research

16 pages, 4536 KiB  
Article
Exogenous Substances Improved Salt Tolerance in Cotton
by Zhiduo Dong, Ajing Meng, Tong Qi, Jian Huang, Huicong Yang, Aziguli Tayir and Bo Wang
Agronomy 2024, 14(9), 2098; https://doi.org/10.3390/agronomy14092098 - 14 Sep 2024
Viewed by 824
Abstract
Soil salinization is a major limiting factor for cotton growth in Southern Xinjiang. Studying technologies and mechanisms to improve cotton salt tolerance is of significant importance for the development and utilization of saline–alkaline land. In this study, ‘Xinluzhong 40’ cotton was used as [...] Read more.
Soil salinization is a major limiting factor for cotton growth in Southern Xinjiang. Studying technologies and mechanisms to improve cotton salt tolerance is of significant importance for the development and utilization of saline–alkaline land. In this study, ‘Xinluzhong 40’ cotton was used as the material, and 150 mmol·L−1 sodium chloride (NaCl) and 1.2% natural saline–alkaline soil extract were employed to simulate single-salt (SS) and mixed-salt (MS) stresses, respectively. The effects of different exogenous substances (sodium nitrophenolate, 24-epibrassinolide, and γ-aminobutyric acid) on the growth characteristics of cotton under salt stress were investigated. The results show that: (1) Under salt stress, the height and biomass of cotton (50 d old) were reduced. Both SS and MS stresses led to increased superoxide dismutase (SOD) activity, elevated proline (PRO) content (with an increase of 50.01% and no significant difference), and increased malondialdehyde (MDA) content (with increases of 63.14% and 32.42%, respectively). At the same time, catalase (CAT) activity decreased, Na+ and Cl− contents increased, K+ content decreased, and the K+/Na+ ratio was reduced. (2) Application of sodium nitrophenolate (S), 24-epibrassinolide (E), and γ-aminobutyric acid (G) significantly improved SOD activity and PRO content while reducing MDA content (decreased by 29.33%, 25.48%, and 30.47% compared to SS treatment; and 1.68%, 5.21%, and 5.49% compared to MS treatment, respectively). They also increased CAT activity (increased by 75.97%, 103.24%, and 80.79% compared to SS treatment; and 91.06%, 82.43%, and 119.68% compared to MS treatment, respectively) and K+/Na+ ratio (increased by 57.59%, 66.35%, and 70.50% compared to SS treatment; and 38.31%, 42.97%, and 66.66% compared to MS treatment, respectively), reduced Cl− content, and promoted increases in plant height and biomass. The effects of exogenous substances on antioxidant capacity and ion balance under salt stress were significant, particularly under SS stress. (3) Principal component analysis revealed that under SS and MS stresses, principal component 1 mainly reflects cotton’s antioxidant capacity, with SOD, CAT, and PRO having high weights; principal component 2 mainly reflects cotton’s ion balance and nutrient absorption, with root Na+, stem Na+, leaf Na+, root K+, and root Cl− having high weights. These findings highlight the potential of exogenous substances to improve cotton salt tolerance and provide scientific evidence for cotton cultivation on saline–alkaline land, offering new insights into cultivation techniques from an applied research perspective. Full article
(This article belongs to the Special Issue Bioactive Compounds for Plant Health and Protection)
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