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5.2
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Journals
Agronomy
Special Issues
Perception and Acquisition of Nutrients in Cultivated Plants
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Perception and Acquisition of Nutrients in Cultivated Plants

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

Deadline for manuscript submissions: closed (31 October 2020) | Viewed by 2396

Special Issue Editors

Prof. Silvia Quaggiotti

E-Mail Website
Guest Editor
Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova, Viale dell’Università 16, 35020 Legnaro, PD, Italy
Interests: plant physiology; plant molecular biology; environmental stress; plant nutrition; root biology; nitrogen
Prof. Dr. Mario Malagoli

E-Mail Website
Guest Editor
Department of Agronomy Food Natural resources Animals and Environment, University of Padova, Agripolis, 35020 Legnaro PD, Italy
Interests: plant physiology; plant nutrition; sulfur nutrition; sulfur and abiotic stresses; sulfur fertilization; sulfur and tolerance to heavy metals; sulfur in grapevine cultivation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

A comprehensive understanding of mechanisms involved in nutrient perception and acquisition by crops is a crucial step for basic knowledge and technological transfer of research.

Crops adapt to different availabilities of nutrients by altering their physiological and morphological responses, leading to functionally adjusting their development. This plasticity depends on plants’ ability to sense the nutritional endogenous status and the external nutrient availability and adequately translate it in physiological responses to maximize nutrient use efficiency. The achievement of the overall pathway, starting from nutrient perception and leading to nutrient acquisition and assimilation, greatly impacts crop productivity and, as a consequence, environmental costs of agriculture.

This issue will welcome original articles dealing with various topics ranging from the agronomical management of mineral nutrition to the molecular regulation of nutrient perception and response in crops.

Prof. Silvia Quaggiotti
Prof. Mario Malagoli
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

  • plant nutrition
  • plant–soil interaction
  • nutrient use efficiency
  • nutrient sensing
  • nutrient stress
  • root architecture

Published Papers (1 paper)

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Research

14 pages, 1395 KiB  
Article
Growth, Rhizosphere Carboxylate Exudation, and Arbuscular Mycorrhizal Colonisation in Temperate Perennial Pasture Grasses Varied with Phosphorus Application
by Sangay Tshewang, Zed Rengel, Kadambot H. M. Siddique and Zakaria M. Solaiman
Agronomy 2020, 10(12), 2017; https://doi.org/10.3390/agronomy10122017 - 21 Dec 2020
Cited by 8 | Viewed by 2042
Abstract
Phosphorus (P) fertiliser is applied regularly to the nutrient-poor sandy soils in southwestern Australia to elevate and/or maintain pasture production. This study aimed to characterise differential growth, root carboxylate exudation, and mycorrhizal responses in three temperate perennial pasture grasses at variable P supply. [...] Read more.
Phosphorus (P) fertiliser is applied regularly to the nutrient-poor sandy soils in southwestern Australia to elevate and/or maintain pasture production. This study aimed to characterise differential growth, root carboxylate exudation, and mycorrhizal responses in three temperate perennial pasture grasses at variable P supply. Tall fescue (Festuca arundinacea L. cv. Prosper), veldt grass (Ehrharta calycina Sm. cv. Mission), and tall wheatgrass (Thinopyrum ponticum L. cv. Dundas) with five P rates varying from 0 to 100 mg P kg−1 soil were evaluated in a controlled environment. Rhizosphere carboxylate exudation and mycorrhizal colonisation were assessed. Veldt grass produced the maximum shoot dry weight, highest agronomic phosphorus-use efficiency at low P supply, as well as the highest specific root length and shoot P content at all P rates. Across species, the maximum shoot weight was obtained at 20 and 50 mg P kg−1 soil, which differed significantly from the two lowest P rates (0 and 5 mg P kg−1 soil). Phosphorus application influenced carboxylate exudation, with plants exuding acetate only in the zero P treatment, and citrate and malonate in the P-supplemented treatments. In all three species, acetate and malonate were the major carboxylates exuded (37–51% of the total). Only tall wheatgrass released trans-aconitate. Citrate and malonate concentrations in the rhizosphere increased with P supply, suggesting their important role in P acquisition. Phosphorus applications reduced arbuscular mycorrhizal colonisation and increased root diameter as the P rate increased. Root carboxylate exudation in low-P soil played a role in mobilisation of P via P solubilisation, but the role of exuded carboxylate in soils well supplied with P might be diminished. Full article
(This article belongs to the Special Issue Perception and Acquisition of Nutrients in Cultivated Plants)
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