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Phosphorus Signaling and Utilization in Plants
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Phosphorus Signaling and Utilization in Plants

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: closed (31 July 2023) | Viewed by 5790

Special Issue Editors

Dr. Xiaofang Zhu

E-Mail Website
Guest Editor
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
Interests: plant physiology; plant genomics and genetics
Dr. Yifeng Wang

E-Mail Website
Guest Editor
State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou 311400, China
Interests: functional genomics; crop; biological breeding; phytohormone; molecular mechanism
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Phosphorus (P) is one of the macronutrients that not only acts as a critical substrate for energy metabolism, nucleic acid, and biofilm synthesis, but also plays an essential regulatory role in photosynthesis, respiration, and numerous enzymatic reactions. Crops mainly absorb inorganic phosphorus (Pi, PO43-, HPO42-, H2PO4-), however, the available inorganic phosphorus that can be directly absorbed by plants is very low in the soil, thus P deficiency becomes a major constraint for global crop productivity. In the long-term evolution, plants have established a series of appropriate P deficiency response mechanisms, including changing the architecture of roots, changing the composition of root exudates, forming symbioses with mycorrhizal fungi and altering the expression of phosphate starvation-induced genes (PSI), etc. In-depth study on the genes that involved in phosphorus absorption and transportation pathways and their regulatory mechanisms will help to improve the phosphorus utilization efficiency (PUE) of crops. The goal of this Special Issue, “Plants phosphorus signaling and utilization”, is to present an overview of the latest fundamental discoveries in this field and the potential application of biotechnologies in crop PUE improvement. We welcome all submissions, including original research, review, and method articles on topics.

Dr. Xiaofang Zhu
Dr. Yifeng Wang
Guest Editors

Manuscript Submission Information

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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.

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Keywords

  • phosphate signaling
  • phosphate uptake and translocation
  • phosphate utilization

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Published Papers (2 papers)

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21 pages, 2499 KiB  
Article
Arbuscular-Mycorrhizal Symbiosis in Medicago Regulated by the Transcription Factor MtbHLHm1;1 and the Ammonium Facilitator Protein MtAMF1;3
by Evgenia Ovchinnikova, David Chiasson, Zhengyu Wen, Yue Wu, Hero Tahaei, Penelope M. C. Smith, Francine Perrine-Walker and Brent N. Kaiser
Int. J. Mol. Sci. 2023, 24(18), 14263; https://doi.org/10.3390/ijms241814263 - 19 Sep 2023
Viewed by 1788
Abstract
Root systems of most land plants are colonised by arbuscular mycorrhiza fungi. The symbiosis supports nutrient acquisition strategies predominantly associated with plant access to inorganic phosphate. The nutrient acquisition is enhanced through an extensive network of external fungal hyphae that extends out into [...] Read more.
Root systems of most land plants are colonised by arbuscular mycorrhiza fungi. The symbiosis supports nutrient acquisition strategies predominantly associated with plant access to inorganic phosphate. The nutrient acquisition is enhanced through an extensive network of external fungal hyphae that extends out into the soil, together with the development of fungal structures forming specialised interfaces with root cortical cells. Orthologs of the bHLHm1;1 transcription factor, previously described in soybean nodules (GmbHLHm1) and linked to the ammonium facilitator protein GmAMF1;3, have been identified in Medicago (Medicago truncatula) roots colonised by AM fungi. Expression studies indicate that transcripts of both genes are also present in arbuscular containing root cortical cells and that the MtbHLHm1;1 shows affinity to the promoter of MtAMF1;3. Both genes are induced by AM colonisation. Loss of Mtbhlhm1;1 expression disrupts AM arbuscule abundance and the expression of the ammonium transporter MtAMF1;3. Disruption of Mtamf1;3 expression reduces both AM colonisation and arbuscule development. The respective activities of MtbHLHm1;1 and MtAMF1;3 highlight the conservation of putative ammonium regulators supporting both the rhizobial and AM fungal symbiosis in legumes. Full article
(This article belongs to the Special Issue Phosphorus Signaling and Utilization in Plants)
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Review

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16 pages, 1120 KiB  
Review
Phenotypes and Molecular Mechanisms Underlying the Root Response to Phosphate Deprivation in Plants
by Meiyan Ren, Yong Li, Jianshu Zhu, Keju Zhao, Zhongchang Wu and Chuanzao Mao
Int. J. Mol. Sci. 2023, 24(6), 5107; https://doi.org/10.3390/ijms24065107 - 7 Mar 2023
Cited by 1 | Viewed by 3238
Abstract
Phosphorus (P) is an essential macronutrient for plant growth. The roots are the main organ for nutrient and water absorption in plants, and they adapt to low-P soils by altering their architecture for enhancing absorption of inorganic phosphate (Pi). This review summarizes the [...] Read more.
Phosphorus (P) is an essential macronutrient for plant growth. The roots are the main organ for nutrient and water absorption in plants, and they adapt to low-P soils by altering their architecture for enhancing absorption of inorganic phosphate (Pi). This review summarizes the physiological and molecular mechanisms underlying the developmental responses of roots to Pi starvation, including the primary root, lateral root, root hair, and root growth angle, in the dicot model plant Arabidopsis thaliana and the monocot model plant rice (Oryza sativa). The importance of different root traits and genes for breeding P-efficient roots in rice varieties for Pi-deficient soils are also discussed, which we hope will benefit the genetic improvement of Pi uptake, Pi-use efficiency, and crop yields. Full article
(This article belongs to the Special Issue Phosphorus Signaling and Utilization in Plants)
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