MtPT5 phosphate transporter is involved in leaf growth and phosphate accumulation of Medicago truncatula

Wang, Xue; Wei, Chunxue; He, Fei; Yang, Qingchuan

doi:10.3389/fpls.2022.1005895

Cited by 5 publications

(5 citation statements)

References 43 publications

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“…MtPT5 encodes a plasma membrane-localized Pi transporter (Liu et al, 2008). Ectopic expression of MtPT5 complements the Pi uptake capability in the Arabidopsis pht1;1pht1;4 double mutant, confirming its function in Pi uptake (Wang et al, 2022). In soybean, GmPT4 is a plasma membrane-localized Pi transporter; and overexpression of GmPT4 increases the growth and Pi uptake in soybean, improving PAE (Guo et al, 2022).…”

Section: Induction Of Phosphate Transporter Genesmentioning

confidence: 78%

“…It has been demonstrated that the root-associated/secreted PAPs are either associated with root surfaces or secreted into the rhizosphere, scavenging Pi from external organic P and increasing Pi availability (Loṕez-Arredondo et al, 2014;Tian and Liao, 2015;Wang and Liu, 2018). The Pi-starvation-increased activity of root-associated/secreted acid phosphatase is observed in common bean, stylo and peanut (Arachis hypogaea) (Liang et al, 2010a;Wei et al, 2022;Liu et al, 2016Liu et al, , 2018.…”

Section: Root Exudatesmentioning

confidence: 99%

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Improving phosphorus acquisition efficiency through modification of root growth responses to phosphate starvation in legumes

Chen

Wang²,

Cardoso³

et al. 2023

Front. Plant Sci.

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Phosphorus (P) is one of the essential macronutrients for plant growth and development, and it is an integral part of the major organic components, including nucleic acids, proteins and phospholipids. Although total P is abundant in most soils, a large amount of P is not easily absorbed by plants. Inorganic phosphate (Pi) is the plant-available P, which is generally immobile and of low availability in soils. Hence, Pi starvation is a major constraint limiting plant growth and productivity. Enhancing plant P efficiency can be achieved by improving P acquisition efficiency (PAE) through modification of morpho-physiological and biochemical alteration in root traits that enable greater acquisition of external Pi from soils. Major advances have been made to dissect the mechanisms underlying plant adaptation to P deficiency, especially for legumes, which are considered important dietary sources for humans and livestock. This review aims to describe how legume root growth responds to Pi starvation, such as changes in the growth of primary root, lateral roots, root hairs and cluster roots. In particular, it summarizes the various strategies of legumes to confront P deficiency by regulating root traits that contribute towards improving PAE. Within these complex responses, a large number of Pi starvation-induced (PSI) genes and regulators involved in the developmental and biochemical alteration of root traits are highlighted. The involvement of key functional genes and regulators in remodeling root traits provides new opportunities for developing legume varieties with maximum PAE needed for regenerative agriculture.

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Section: Induction Of Phosphate Transporter Genesmentioning

confidence: 78%

Section: Root Exudatesmentioning

confidence: 99%

Improving phosphorus acquisition efficiency through modification of root growth responses to phosphate starvation in legumes

Chen

Wang²,

Cardoso³

et al. 2023

Front. Plant Sci.

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show abstract

“…Excess Pi accumulates in the vacuole in tissues (Veneklaas et al, 2012) and in globular structures in roots (Ryan et al, 2019), which are the mechanisms of high P tolerance, and both these processes rely on P transporters to move P across membranes. As unigenes of phosphate transporters were upregulated in both Polygonum species by high‐P exposure (Supporting Information: Table ), Polygonum species might allocate high Pi into vacuoles by phosphate transporters to achieve tolerance to high P. Phosphate transporter MtPT5 plays a vital role in P accumulation, and overexpression of MtPT5 promotes leaf size of Medicago truncatula , accompanied with greater biomass and P accumulation (Wang et al, 2022b). Similarly, the high expression of phosphate transporters (Supporting Information: Table ) in leaves might contribute to leaf growth and account for the P hyperaccumulation and storage in Polygonum species.…”

Section: Discussionmentioning

confidence: 99%

Section: F I G U R Ementioning

confidence: 96%

Physiological and molecular responses in phosphorus‐hyperaccumulating Polygonum species to high phosphorus exposure

Ye,

Xie,

Liu

et al. 2024

Plant Cell & Environment

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Phosphorus (P)‐hyperaccumulators for phytoextraction from P‐polluted areas generally show rapid growth and accumulate large amounts of P without any toxicity symptom, which depends on a range of physiological processes and gene expression patterns that have never been explored. We investigated growth, leaf element concentrations, P fractions, photosynthetic traits, and leaf metabolome and transcriptome response in amphibious P‐hyperaccumulators, Polygonum hydropiper and P. lapathifolium, to high‐P exposure (5 mmol L−1), with 0.05 mmol L−1 as the control. Under high‐P exposure, both species demonstrated good growth, allocating more P to metabolite P and inorganic P (Pi) accompanied by high potassium and calcium. The expression of a cluster of unigenes associated with photosynthesis was maintained or increased in P. lapathifolium, explaining the increase in net photosynthetic rate and the rapid growth under high‐P exposure. Metabolites of trehalose metabolism, including trehalose 6‐phosphate and trehalose, were sharply increased in both species by the high‐P exposure, in line with the enhanced expression of associated unigenes, indicating that trehalose metabolic pathway was closely related to high‐P tolerance. These findings elucidated the physiological and molecular responses involved in the photosynthesis and trehalose metabolism in P‐hyperaccumulators to high‐P exposure, and provides potential regulatory pathways to improve the P‐phytoextraction capability.

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“…tereticornis under -P/-P conditions. On the contrary, the expression of PHT1.5 and PHT1.6 transporters were higher in the leaves of E. grandis plants under +P/+P conditions (Figures 5B, 5C), which may be related to P transport and remobilization (Wang et al 2022). In Medicago truncatula the PHT1 transporter MtPT5 was proved to play an important role in leaf growth and Pi accumulation (Wang et al 2022).…”

Section: Genes Related To Transport and Uptake P (Pht1 And Pho1)mentioning

confidence: 94%

Phosphorus uptake and PSR gene expression in eucalypts plants under split root system

FerreiraTorres,

de Andrade,

Mazzafera

2024

Preprint

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Phosphorus (P) often limits plant growth and development because its availability in most soils is low, mainly in tropical soils. Various phosphate transporters and regulatory elements, including transcription factors, are involved in the uptake and transport of P from the soil into root cells and to other plant organs. The split-root technique was applied to three eucalypt species to understand better the mechanisms of the root-leaf signaling and remobilization response to P supply. Two-month-old seedlings of Eucalypts grandis, E. globulus, and E. tereticornis were used, with each half of the split root system placed in pots. The P treatments were: +P/+P, +P/-P, and-P/-P (+P = P supplementation and –P = P depleted). P was supplied as 440 μM nutrient solution. Eucalypts plants were grown for six weeks and RT-qPCR evaluated the expression of genes related to P uptake, transport, and utilization in roots and leaves. P supply on one side of the root seemed to compensate for the lack of P on the other side in the +P/-P treatment, so the plant did not show P stress responses, and root-to-root signaling and remobilization in this treatment differed depending on the species. The genes analyzed were mostly induced when plants were under P deprivation, and the expression response was species-dependent. Therefore, this indicates that different mechanisms may be involved in plant response to low P and that signaling control may also be linked to the adaptation of eucalypts species to low soil P.

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MtPT5 phosphate transporter is involved in leaf growth and phosphate accumulation of Medicago truncatula

Cited by 5 publications

References 43 publications

Improving phosphorus acquisition efficiency through modification of root growth responses to phosphate starvation in legumes

Improving phosphorus acquisition efficiency through modification of root growth responses to phosphate starvation in legumes

Physiological and molecular responses in phosphorus‐hyperaccumulating Polygonum species to high phosphorus exposure

Phosphorus uptake and PSR gene expression in eucalypts plants under split root system

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