Overexpression of a Rice Monosaccharide Transporter Gene (OsMST6) Confers Enhanced Tolerance to Drought and Salinity Stress in Arabidopsis thaliana

Monfared, Hossein Hosseini; Chew, Jin Kiat; Azizi, Parisa; Gong, Xue; Ee, Su-Fang; Kadkhodaei, Saeid; Hedayati, Pouya; Ismail, Ismanizan; Zainal, Zamri

doi:10.1007/s11105-019-01186-x

Cited by 20 publications

(7 citation statements)

References 41 publications

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“…Regarding the other transporter, the OeMST2 gene is also induced by all the stresses analyzed in the Cellina di Nardò, but the drought determines a more significant accumulation of transcripts. A study on transgenic Arabidopsis showed overexpression of OsMST genes in water stress with consequent accumulation of sugars and better resistance to drought than wild-type plants [ 62 ]. Hence, the results confirm the ability of the Cellina di Nardò cultivar to reprogram its cellular activities to tolerate drought stress, also confirmed by the RWC value measured.…”

Section: Discussionmentioning

confidence: 99%

Xylella fastidiosa and Drought Stress in Olive Trees: A Complex Relationship Mediated by Soluble Sugars

Pascali

Vergine

Negro

et al. 2022

Biology

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Xylella fastidiosa (Xf) subsp. pauca “De Donno” is the etiological agent of “Olive Quick Decline Syndrome” (OQDS) on olive trees (Olea europaea L.); the presence of the bacterium causes xylem vessel occlusions inducing a drought stress and the development of leaf scorch symptoms, which may be worsened by water shortage in summer. In order to evaluate how the two stress factors overlap each other, the carbohydrate content and the expression patterns of genes related to carbohydrate metabolism have been evaluated in two olive cvs trees (Cellina di Nardò, susceptible to Xf, and Leccino, resistant to Xf) reporting transcriptional dynamics elicited by Xf infection, drought, or combined stress (drought/Xf). In the Xf-susceptible Cellina di Nardò plants, Xf and its combination with drought significantly decrease total sugars compared to control (−27.0% and −25.7%, respectively). In contrast, the Xf-resistant Leccino plants show a more limited reduction in sugar content in Xf-positive conditions (−20.1%) and combined stresses (−11.1%). Furthermore, while the amount of glucose decreases significantly in stressed Cellina di Nardò plants (≈18%), an increase was observed in Leccino plants under drought/Xf combined stresses (+11.2%). An opposite behavior among cvs was also observed for sucrose, as an accumulation of the disaccharide was recorded in stressed Leccino plants (≈37%). The different response to combined stress by Xf-resistant plants was confirmed considering genes coding for the sucrose or monosaccharide transporter (OeSUT1, OeMST2), the cell wall or vacuolar invertase (OeINV-CW, OeINV-V), the granule-bound starch synthase I (OeGBSSI) and sucrose synthase (OeSUSY), with a higher expression than at least one single stress (e.g., ≈1-fold higher or more than Xf for OeMST2, OeINV-CW, OeINV-V, OeGBSSI). It is probable that the pathways involved in drought stress response induce positive effects useful for pathogen resistance in cv Leccino, confirming the importance of investigating the mechanisms of cross-talk of biotic and abiotic responses.

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Section: Discussionmentioning

confidence: 99%

Xylella fastidiosa and Drought Stress in Olive Trees: A Complex Relationship Mediated by Soluble Sugars

Pascali

Vergine

Negro

et al. 2022

Biology

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“…Vankuyk et al reported that regulators CreA regulated the expression of SUT genes in A. niger in response to extracellular pH changes [ 15 ]. In Arabidopsis , overexpression of rice monosaccharide transporter gene (OsMST6) could enhance the tolerance to the salinity [ 16 ]. In insects, sugar transporters might also act as receivers for virus entry.…”

Section: Introductionmentioning

confidence: 99%

Identification and Expression Analysis of Sugar Transporter Gene Family in Aspergillus oryzae

Jiang

Liang

et al. 2020

International Journal of Genomics

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Sugar transporter (SUT) genes are associated with multiple physiological and biochemical processes in filamentous fungi, such as the response to various stresses. However, limited systematic analysis and functional information of SUT gene family have been available on Aspergillus oryzae (A. oryzae). To investigate the potential roles of SUTs in A. oryzae, we performed an integrative analysis of the SUT gene family in this study. Based on the conserved protein domain search, 127 putative SUT genes were identified in A. oryzae and further categorized into eight distinct subfamilies. The result of gene structure and conserved motif analysis illustrated functional similarities among the AoSUT proteins within the same subfamily. Additionally, expression profiles of the AoSUT genes at different growth stages elucidated that most of AoSUT genes have high expression levels at the stationary phase while low in the adaptive phase. Furthermore, expression profiles of AoSUT genes under salt stress showed that AoSUT genes may be closely linked to salt tolerance and involved in sophisticated transcriptional process. The protein-protein interaction network of AoSUT propounded some potentially interacting proteins. A comprehensive overview of the AoSUT gene family will offer new insights into the structural and functional features as well as facilitate further research on the roles of AoSUT genes in response to abiotic stresses.

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“…OsSUT1 an important sucrose transporter is also upregulated after heading. Disruption of OsSUT1 does not affect pollen maturation but their function gets impaired ( Hirose et al, 2010 ), whereas OsMST6 ( Monfared et al, 2020 ) and OsNHX1 ( Almeida et al, 2017 ) regulate abiotic stress response. Interestingly, OsCIPK23 (calcineurin B-like interacting protein kinase) has been implicated in mediating common signaling pathways between pollination and drought stress response ( Yang et al, 2008 ).…”

Section: Discussionmentioning

confidence: 99%

Gene Expression Dynamics in Rice Peduncles at the Heading Stage

Kandpal¹,

Vishwakarma²,

Krishnan³

et al. 2020

Front. Genet.

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Improving grain yield in the staple food crop rice has been long sought goal of plant biotechnology. One of the traits with significant impact on rice breeding programs is peduncle elongation at the time of heading failing which leads to significant reduction in grain yield due to incomplete panicle exsertion. To decipher transcriptional dynamics and molecular players underlying peduncle elongation, we performed RNA sequencing analysis of elongating and non-elongating peduncles in two Indian cultivars, Swarna and Pokkali, at the time of heading. Along with genes associated with cell division and cell wall biosynthesis, we observed significant enrichment of genes associated with auxins, gibberellins, and brassinosteroid biosynthesis/signaling in the elongating peduncles before heading in both the genotypes. Similarly, genes associated with carbohydrate metabolism and mobilization, abiotic stress response along with cytokinin, abscisic acid, jasmonic acid, and ethylene biosynthesis/signaling were enriched in non-elongating peduncles post heading. Significant enrichment of genes belonging to key transcription factor families highlights their specialized roles in peduncle elongation and grain filling before and after heading, respectively. A comparison with anther/pollen development-related genes provided 76 candidates with overlapping roles in anther/pollen development and peduncle elongation. Some of these are important for carbohydrate remobilization to the developing grains. These can be engineered to combat with incomplete panicle exsertion in male sterile lines and manipulate carbohydrate dynamics in grasses. Overall, this study provides baseline information about potential target genes for engineering peduncle elongation with implications on plant height, biomass composition and grain yields in rice.

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Overexpression of a Rice Monosaccharide Transporter Gene (OsMST6) Confers Enhanced Tolerance to Drought and Salinity Stress in Arabidopsis thaliana

Cited by 20 publications

References 41 publications

Xylella fastidiosa and Drought Stress in Olive Trees: A Complex Relationship Mediated by Soluble Sugars

Xylella fastidiosa and Drought Stress in Olive Trees: A Complex Relationship Mediated by Soluble Sugars

Identification and Expression Analysis of Sugar Transporter Gene Family in Aspergillus oryzae

Gene Expression Dynamics in Rice Peduncles at the Heading Stage

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