Increased Drought and Salinity Tolerance in Citrus aurantifolia (Mexican Lemon) Plants Overexpressing Arabidopsis CBF3 Gene

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datacite.alternateIdentifier.citationJOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,Vol.20,244-252,2020
datacite.alternateIdentifier.doi10.1007/s42729-019-00130-y
datacite.creatorRomero Romero, Jesus L.
datacite.creatorInostroza Blancheteau, Claudio
datacite.creatorReyes Diaz, Marjorie
datacite.creatorPablo Matte, Juan
datacite.creatorAquea, Felipe
datacite.creatorEspinoza, Carmen
datacite.creatorGil, Pilar M.
datacite.creatorArce johnson, Patricio
datacite.date2020
datacite.subject.englishDrought tolerance
datacite.subject.englishAbiotic stress
datacite.subject.englishTransgenics citrus
datacite.subject.englishCBF3 transcription factor
datacite.titleIncreased Drought and Salinity Tolerance in Citrus aurantifolia (Mexican Lemon) Plants Overexpressing Arabidopsis CBF3 Gene
dc.date.accessioned2021-04-30T17:05:06Z
dc.date.available2021-04-30T17:05:06Z
dc.description.abstractCitrus are a globally important fruit crop. Abiotic stressors such as drought and salinity adversely affect physiological citrus performance and survival. With the aim of improving drought tolerance in citrus plants, we constructed transgenic lines of Citrus lemon overexpressing the Arabidopsis transcription factor CBF3. Molecular, physiological, and quantitative real-time analyses showed high expression of AtCBF3 in three selected transgenic lines. During a 15-day treatment of water deficit by cessation of irrigation, the transgenic lines LM2 and LM14 showed lower stomatal conductance and transpiration paired with lower photosynthesis, whereas transgenic line LM7 maintained its photosynthesis, declining stomatal conductance, and transpiration compared to WT plants, which is manifested into more efficient water use. The genes CsRafS1 and CsGolS1 showed similar or greater expression in one of the transgenic lines with respect to control plants. Moreover, transgenic lines were more tolerant to saline stress and presented a greener phenotype with increased chlorophyll content in leaf discs compared to WT plants. In addition, a lower electrical conductivity in solution was observed in transgenic lines. Furthermore, all transgenic lines exhibited significantly less accumulation of reactive oxygen species than WT plants. Together, these results suggest the potential for heterologous expression of the AtCBF3 gene to mediate tolerance to hydric and saline stress in citrus plants.
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3960
dc.language.isoen
dc.publisherSPRINGER INTERNATIONAL PUBLISHING AG
dc.sourceJOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
oaire.resourceTypeArticle
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uct.indizacionSCI
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