Root Adaptation via Common Genetic Factors Conditioning Tolerance to Multiple Stresses for Crops Cultivated on Acidic Tropical Soils

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dc.creatorVanessa de Almeida Barros
dc.creatorRahul Chandnani
dc.creatorSylvia M. de Sousa
dc.creatorLaiane S. Maciel
dc.creatorMutsutomo Tokizawa
dc.creatorClaudia T. Guimaraes
dc.creatorJurandir Vieira de Magalhaes
dc.creatorLeon V. Kochian
dc.date.accessioned2024-02-23T18:01:03Z
dc.date.accessioned2025-09-08T23:36:13Z
dc.date.available2024-02-23T18:01:03Z
dc.date.issued2020-11-11
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3389/fpls.2020.565339
dc.identifier.issn1664-462X
dc.identifier.urihttps://hdl.handle.net/1843/64568
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofFrontiers in Plant Science
dc.rightsAcesso Aberto
dc.subjectAlumínio
dc.subjectAcidez do Solo
dc.subjectFósforo
dc.subject.otherAcid soils
dc.subject.otherAluminum toxicity
dc.subject.otherAluminum tolerance
dc.subject.otherPhosphorus deficiency
dc.subject.otherPhosphorus efficiency
dc.subject.otherDrought resistance
dc.subject.otherTranscription factor
dc.subject.otherSignaling
dc.titleRoot Adaptation via Common Genetic Factors Conditioning Tolerance to Multiple Stresses for Crops Cultivated on Acidic Tropical Soils
dc.typeArtigo de periódico
local.citation.epage25
local.citation.spage565339
local.citation.volume11
local.description.resumoCrop tolerance to multiple abiotic stresses has long been pursued as a Holy Grail in plant breeding efforts that target crop adaptation to tropical soils. On tropical, acidic soils, aluminum (Al) toxicity, low phosphorus (P) availability and drought stress are the major limitations to yield stability. Molecular breeding based on a small suite of pleiotropic genes, particularly those with moderate to major phenotypic effects, could help circumvent the need for complex breeding designs and large population sizes aimed at selecting transgressive progeny accumulating favorable alleles controlling polygenic traits. The underlying question is twofold: do common tolerance mechanisms to Al toxicity, P deficiency and drought exist? And if they do, will they be useful in a plant breeding program that targets stress-prone environments. The selective environments in tropical regions are such that multiple, co-existing regulatory networks may drive the fixation of either distinctly different or a smaller number of pleiotropic abiotic stress tolerance genes. Recent studies suggest that genes contributing to crop adaptation to acidic soils, such as the major Arabidopsis Al tolerance protein, AtALMT1, which encodes an aluminum-activated root malate transporter, may influence both Al tolerance and P acquisition via changes in root system morphology and architecture. However, trans-acting elements such as transcription factors (TFs) may be the best option for pleiotropic control of multiple abiotic stress genes, due to their small and often multiple binding sequences in the genome. One such example is the C2H2-type zinc finger, AtSTOP1, which is a transcriptional regulator of a number of Arabidopsis Al tolerance genes, including AtMATE and AtALMT1, and has been shown to activate AtALMT1, not only in response to Al but also low soil P. The large WRKY family of transcription factors are also known to affect a broad spectrum of phenotypes, some of which are related to acidic soil abiotic stress responses. Hence, we focus here on signaling proteins such as TFs and protein kinases to identify, from the literature, evidence for unifying regulatory networks controlling Al tolerance, P efficiency and, also possibly drought tolerance. Particular emphasis will be given to modification of root system morphology and architecture, which could be an important physiological “hub” leading to crop adaptation to multiple soil-based abiotic stress factors.
local.identifier.orcidhttps://orcid.org/0000-0001-5877-0030
local.publisher.countryBrasil
local.publisher.departmentENFERMAGEM - ESCOLA DE ENFERMAGEM
local.publisher.departmentMEDICINA - FACULDADE DE MEDICINA
local.publisher.initialsUFMG
local.url.externahttps://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2020.565339/full

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