The identification of osmoprotectant compounds from Jatropha curcas Linn. plant for natural drought stress tolerance

Winaya, Aris; Maftuchah, Maftuchah; Zainudin, Agus

doi:10.1016/j.egyr.2019.09.037

Cited by 12 publications

(3 citation statements)

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“…Under drought stress, a large amount of ra nose and galactitol accumulates in the leaves [39,40]. Increased galactinol and ra nose can effectively inhibit the accumulation of ROS [41] and enhance the osmotic adjustment ability of cells [42]. We found that the contents of ra nose and galactinol increased rapidly under drought stress in P. wutunensis.…”

Section: Discussionmentioning

confidence: 68%

Genes and pathways associated with drought tolerance in Populus wutunensis under drought stress

Zou

Sun

Liu

et al. 2023

Preprint

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Background: Populus wutunensis is widely cultivated as part of the Three-North Shelter Forest Program in China. This hybrid grows rapidly and is tolerant to salinity and drought; however, the molecular mechanisms behind the drought resistance of P. wutunensis remain unclear. We performed deep transcriptome sequencing to analyze and compare the differentially expressed genes (DEGs) between drought stress and rehydrationconditions. Results: RNA-sequence analysis identified 5102 DEGs among the control, drought, and rehydration treatments. Further analysis of these DEGs showed that drought response genes are mainly involved in plant hormone signal transduction and galactose metabolism. Rehydration recovery mainly involves plant hormone signal transduction, flavonoid metabolism, photosynthesis-antenna proteins, and ribosome. Transcription factors play an important role in drought and rehydration by participating in signal transduction. In addition, compared with drought and control, photosynthesis-antenna proteins and ribosomewere clearly up-regulated after rewatering, which may have led to the compensatory growth of P. wutunensis during recovery. Conclusions: Our results show that P. wutunensis responds to drought and rehydration through different pathways, and identify candidate genes related to drought and rehydration in those pathways. Our results improve the understanding of the molecular mechanisms of drought tolerance in P. wutunensis and provide a foundation for further research.

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Section: Discussionmentioning

confidence: 68%

Genes and pathways associated with drought tolerance in Populus wutunensis under drought stress

Zou

Sun

Liu

et al. 2023

Preprint

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“…J. cordata tiene un acoplamiento alto entre el flujo de savia y el VPD en días secos. Se han documentado ajustes osmóticos en raíces de algunas especies de Jatropha (J. curcas), conforme disminuye la humedad en el suelo, principalmente por tetra-y trisacáridos (estaquiosa y rafinosa), aumentando la turgencia radical y foliar (Silva et al 2010, Winaya et al 2020) y la conductividad hidráulica aún a pesar del cierre estomático. En este estudio se encontró que el Ψ md fue menos negativo en días secos en comparación con los días húmedos, lo que sugiere mecanismos diferentes de compensación y de conductividad hidráulica inmediatamente después del cierre estomático, aunque mantiene tasas similares en Fd al iniciar condiciones de limitación en la disponibilidad de agua en el suelo (Figura 4).…”

Section: Discussionunclassified

Diferentes estrategias en las dinámicas de flujo de savia y nicho hidrológico de árboles dominantes en el Desierto Sonorense posibilitan su coexistencia

Martínez-Núñez,

Castellanos,

Basant

et al. 2023

Bot. Sci.

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Antecedentes: Las plantas en ecosistemas áridos exhiben adaptaciones a las sequías periódicas, más frecuentes e intensas por el cambio global. Conocer los atributos ecofisiológicos en las especies, ayudará a entender sus adaptaciones a las limitaciones de agua. En los ecosistemas del Noroeste de México coexisten árboles perennifolios y caducifolios, de los que poco se conocen sus adaptaciones hídricas y funcionales. Preguntas: ¿Cuáles son las diferencias en los atributos de resistencia a la sequía e hídricos, en árboles coexistentes de una comunidad semi-árida? ¿Es posible determinar mecanismos de coexistencia? Especies de estudio: Olneya tesota, Ipomoea arborescens y Jatropha cordata. Sitio y año de estudio: Matorral subtropical del Desierto Sonorense. Sonora, México, 2021. Métodos: Densidad de flujo de savia (Fd) medido continuamente utilizando sensores de disipación de calor, potenciales hídricos al amanecer (Ψpd), al mediodía (Ψmd) y conductancia estomática (gs), en el verano. Resultados: Olneya (perennifolia) mantuvo Fd durante todo el año, pero Ipomoea y Jatropha (deciduas) solo durante días húmedos del verano. La Fd máxima de Ipomoea y Jatropha (~1200 g cm-2 día-1) fue el doble que Olneya (600 g cm-2 día-1). Durante los períodos secos, los árboles deciduos disminuyeron Fd. Los potenciales hídricos y conductancia estomática permitieron diferenciar los nichos hidrológicos en tipos funcionales isohídricos (Ipomoea y Jatropha) y anisohídricos (Olneya). Conclusiones: Un gradiente decreciente de resistencia a la sequía se encontró entre Ipomoea, Jatropha y Olneya. Estas especies logran su coexistencia por sus nichos hidrológicos, caracterizados por flujos de savia, estrategias iso-anisohídricas, y profundidad de raíces.

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“…One of the mechanism to maintain this balance is to form soluble compounds to hold water out of the cell (compatible solute) [123,124]. In addition, these soluble compounds are antioxidant compounds that protect cell membranes from damage caused by ROS, one of which is proline [47,125,126,127]. Proline and glycine-betaine are used as antioxidants and cell membrane protection from radical compounds (ROS) [128].…”

Section: Physiological Effects and Mechanismsmentioning

confidence: 99%

Drought Stress: Responses and Mechanism in Plants

Pamungkas¹,

Suwarto

Suprayogi

et al. 2022

RAS

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The function of water for plants is crucial, including playing the roles in metabolic reactions. The aims of this article are to give information on the effects of drought stress on plant morphology, physiology, and biochemistry, as well as mitigation methods in drought stress management for plant production. Plants manage drought stress using a mechanism, namely drought escape, drought avoidance and drought tolerance. Drought escape is the ability of plants to accelerate flowering or life cycle, drought avoidance is the ability of plants to reduce water loss and increase water absorption through morphological changes in the root system, drought tolerance is the plant adaptation to drought by changes in plant physiological and biochemical processes. Physiological changes that occur include closing the stomata and decreased photosynthesis. The biochemical responses include the synthesis of solute compounds as a form of osmotic adjustment in the cell called osmotic adjustment to reduce water loss from the cell. The biochemical indicators are the increased concentrations of abscisic acid (ABA), proline, and sugar (trehalose). ABA acts as a signal to stimulate stomatal closure to reduce the transpiration rate. Proline is an indicator of plants adapting to drought stress, playing a role in the osmotic adjustment of cells to retain in the cell. Trehalose is a compatible sugar acting as an osmoprotectant, it can maintain the integrity of cell membranes (water replacement) and form hydrogen bonds (water entrapment). Plants under drought stress conditions can adapt by making morphological, physiological, and biochemical responses by osmotic adjustment. These conditions need to be managed so that appropriate strategies and technologies are needed as mitigation measures.

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The identification of osmoprotectant compounds from Jatropha curcas Linn. plant for natural drought stress tolerance

Cited by 12 publications

References 11 publications

Genes and pathways associated with drought tolerance in Populus wutunensis under drought stress

Genes and pathways associated with drought tolerance in Populus wutunensis under drought stress

Diferentes estrategias en las dinámicas de flujo de savia y nicho hidrológico de árboles dominantes en el Desierto Sonorense posibilitan su coexistencia

Drought Stress: Responses and Mechanism in Plants

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