ArticleAnnals of botany2019
Overexpression of an evolutionarily conserved drought-responsive sugarcane gene enhances salinity and drought resilience.
Article in Annals of botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 41 citations in OpenAlex.
- Global identification of LIM genes in response to different heat stress regimes in Lactuca sativa.BMC plant biology · 2024Article
- Cell size differences affect photosynthetic capacity in a Mesoamerican and an Andean genotype ofFrontiers in plant science · 2024Article
- Novel insights into maize (Zea mays) development and organogenesis for agricultural optimization.Planta · 2023Review
- Heat stress during seed development leads to impaired physiological function and plasticity in seed oil accumulation inFrontiers in plant science · 2023Article
- Drought and salinity stresses induced physio-biochemical changes in sugarcane: an overview of tolerance mechanism and mitigating approaches.Frontiers in plant science · 2023Review
- Article
- A short review on sugarcane: its domestication, molecular manipulations and future perspectives.Genetic resources and crop evolution · 2022Review
- Transgenerational effect of UV-B priming on photochemistry and associated metabolism in rice seedlings subjected to PEG-induced osmotic stress.Photosynthetica · 2022Article
- Genome-wide identification of heat shock factors and heat shock proteins in response to UV and high intensity light stress in lettuce.BMC plant biology · 2021Article
- Influence of Maternal Habitat on Salt Tolerance During Germination and Growth inPlants (Basel, Switzerland) · 2020Article
- Morphological assessment of water stressed sugarcane: A comparison of waterlogged and drought affected crop.Saudi journal of biological sciences · 2020Article
- Minimization of post-harvest sucrose losses in drought affected sugarcane using chemical formulation.Saudi journal of biological sciences · 2020Article
- Sustainable bioenergy for climate mitigation: developing drought-tolerant trees and grasses.Annals of botany · 2019Article
- Male Sterility in Maize after Transient Heat Stress during the Tetrad Stage of Pollen Development.Plant physiology · 2019Article
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Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsImproving drought adaptation is more pressing for crops such as sugarcane, rice, wheat and maize, given the high dependence of these crops on irrigation. One option for enhancing adaptation to water limitation in plants is by transgenic approaches. An increasing number of genes that are associated with mechanisms used by plants to cope with water scarcity have been discovered. Genes encoding proteins with unknown functions comprise a relevant fraction of the genes that are modulated by drought. We characterized a gene in response to environmental stresses to gain insight into the unknown fraction of the sugarcane genome. Scdr2 (Sugarcane drought-responsive 2) encodes a small protein and shares highly conserved sequences within monocots, dicots, algae and fungi.
methodsPlants overexpressing the Scdr2 sugarcane gene were examined in response to salinity and drought. Measurements of the gas exchange parameters, germination rate, water content, dry mass and oxidative damage were performed. Seeds as well as juvenile plants were used to explore the resilience level of the transgenic plants when compared with wild-type plants. KEY
resultsOverexpression of Scdr2 enhanced germination rates in tobacco seeds under drought and salinity conditions. Juvenile transgenic plants overexpressing Scdr2 and subjected to drought and salinity stresses showed higher photosynthesis levels, internal CO2 concentration and stomatal conductance, reduced accumulation of hydrogen peroxide in the leaves, no penalty for photosystem II and faster recovery after submission to both stress conditions. Respiration was not strongly affected by both stresses in the Scdr2 transgenic plants, whereas wild-type plants exhibited increased respiration rates.
conclusionsScdr2 is involved in the response mechanism to abiotic stresses. Higher levels of Scdr2 enhanced resilience to salinity and drought, and this protection correlated with reduced oxidative damage. Scdr2 confers, at the physiological level, advantages to climate limitations. Therefore, Scdr2 is a potential target for improving sugarcane resilience to abiotic stress.
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