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Dear Colleagues,

We are inviting submissions to the upcoming Special Issue of Applies Sciences entitled “Agroecosystems: From Soil Environment to Plant Nutrition.”

Soil health is the cornerstone of agricultural green development. Soil erosion and degradation cause obstacles to the absorption and utilization of plant nutrients, leading in turn to the degradation of agricultural ecosystems and negatively impacting on food security and environmental sustainable development. Plants mainly absorb minerals and other nutrients from the soil, while different agricultural inputs, technologies and policies can affect the interaction of nutrients and ionic homeostasis. Therefore, it is essential to understand plant nutrition in complex soil environments more comprehensively. This Special Issue will cover a variety of topics related to the following areas, including but not limited to:

Biogeochemistry and dynamics of elements in soil and plants in agroecosystem
Agronomic practice and mechanism of soil pollution and remediation
Nutrient deficiency and excess-from diagnosis to application
Monitoring and imaging analysis technology of soil elements and plant nutrition
Effects of elements on soil and plant physiological ecology under normal and stress conditions
Physiological mechanism of the absorption and distribution of elements in plants
Molecular regulation mechanism of ionic homeostasis in plants
Metabolism and circulation of elements in agroecosystem

In this Special Issue, both theoretical and experimental studies are welcome, as well as comprehensive review and opinion papers.

Prof. Dr. Cuncang Jiang
Prof. Dr. Kaiyong Wang
Dr. Guidong Liu
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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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

plant nutrition
agroecosystem
agronomic practice
nutrient cycle
molecular and physiological mechanism

Published Papers (1 paper)

Research

16 pages, 2231 KiB

Open AccessArticle

Potential Novel Plant Growth Promoting Rhizobacteria for Bio-Organic Fertilizer Production in the Oil Palm (Elaeis guineensis Jacq.) in Malaysia

by Shih Hao Tony Peng, Kheng Hoy Chee, Halimi Mohd Saud, Mohd Rafii Yusop and Geok Hun Tan

Appl. Sci. 2023, 13(12), 7105; https://doi.org/10.3390/app13127105 - 14 Jun 2023

Viewed by 1399

Abstract

The present study aimed to characterize the potential plant growth-promoting rhizobacteria (PGPR) based on biochemical tests based on eight bacterial isolates, and to identify potential PGPR based on the 16S rRNA sequencing molecular method. Eight potential PGPR strains (UPMC1166, UPMC1168, UPMC1254, UPMC1376, UPMC1389, UPMC1393, UPMC703 and UPMC704) isolated from the soils in the oil palm (Elaeis guineensis) estates across Malaysia were selected because of their most PGPR activities. They were screened for nitrogen fixation, phosphate and potassium solubilization, and production of indole-3-acetic acid (IAA). All isolates showed the ability to grow between pH 2 to 9 and survive from 2 to 15% (w/v) of the salt medium. Among the isolated PGPRs, four PGPRs (UPMC1166, UPMC1168, UPMC1254 and UPMC1389) showed the ability to fix nitrogen and had the potential to produce IAA. Furthermore, two PGPRs (UPMC1393 and UPMC1376) demonstrated the ability to solubilize phosphate, while three PGPRs (UPMC703, UPMC704, and UPMC1393) showed the ability to solubilize potassium. Therefore, all the above eight PGPR isolates can benefit the oil palm cultivation industry. The molecular identification based on 16S rRNA gene sequence revealed that UPMC1166 was identified as Bacillus methylotrophicus; UPMC1168 as B. siamensis; UPMC1254 as B. subtilis; UPMC1389 as B. albus; UPMC1376 as Lactobacillus plantarum; UPMC1393 as B. marisflavi; UPMC703 as Burkhoderiaanthina and UPMC704 as B. metallica. These novel strains can be further investigated for their viability and effectiveness for bio-organic fertilizer production and application in the immature stage of oil palm growth. Full article

(This article belongs to the Special Issue Agroecosystems: From Soil Environment to Plant Nutrition)

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