Photoprotective function of energy dissipation by thermal processes and photorespiratory mechanisms in Jatropha curcas plants during different intensities of drought and after recovery

Silva, Evandro N.; Silveira, Joaquim Albenísio Gomes da; Ribeiro, Rafael Vasconcelos; Vieira, Suyanne A.

doi:10.1016/j.envexpbot.2014.09.008

Cited by 79 publications

(60 citation statements)

References 55 publications

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“…In addition, ETR/PN increased due to the increase previously described to NPQ, suggesting that occurred lower electron transfer to CO2 fixation, with consequent use of these electrons to photorespiration and other metabolic processes . Similar behavior was reported to EXC in Saccharum spp plants (Sales et al, 2015) and Jatropha curcas (Silva et al, 2015). Rivas et al (2016) studying two cultivars of V. unguiculata, 'Pingo de Ouro 1-2' and Santo Inácio, found reductions for NPQ in 80% and 200%, respectively, after 10 days of irrigation suspension.…”

Section: Discussionsupporting

confidence: 53%

Short-Time of Rehydration is not Effective to Re-Establish Chlorophyll Fluorescence and Gas Exchange in Two Cowpea Cultivars Submitted to Water Deficit

Barros

Barbosa

Lima

et al. 2017

Not Bot Horti Agrobo

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Low water supply frequently interferes on chlorophyll fluorescence and gas exchange. This study aimed to answer if a short-time of rehydration is efficient to re-establish chlorophyll fluorescence and gas exchange in cowpea plants. The experiment used four treatments (sensitive / water deficit, sensitive / control, tolerant / water deficit and tolerant / control). The sensitive and tolerant cultivars after water restriction had significant changes in gas exchange. On the third day, the stress caused lower for PN and gs in sensitive cultivar of 67% and 45%, respectively. After rehydration these parameters were not recovered significantly to two cultivars. In relation to chlorophyll fluorescence, water stress caused significant changes in all parameters evaluated of cultivars, being observed effects more intense on sensitive cultivar in the parameters Fv/Fm (38%) and Fo (69%). Rehydration did not promote recovery of the values of Fv/Fm and Fo to sensitive cultivar. Therefore, our study revealed that a short-time of rehydration is not effective to re-establish chlorophyll fluorescence and gas exchange in cowpea plants submitted to water deficit.

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Section: Discussionsupporting

confidence: 53%

Short-Time of Rehydration is not Effective to Re-Establish Chlorophyll Fluorescence and Gas Exchange in Two Cowpea Cultivars Submitted to Water Deficit

Barros

Barbosa

Lima

et al. 2017

Not Bot Horti Agrobo

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“…Similar results show that the recovery of g S is slower than P N , because this recovery is linked to the gradual decrease in the concentration of abscisic acid (ABA), and the time required for this to occur depends on the plant species and degree of stress (Pompelli et al, 2010). On the other hand, Silva et al (2015) recently showed a more rapid restoration (5 days) of g S than of to P N (10 days), suggesting the need for recovery of g S to facilitate the restoration of P N . Pompelli et al (2010) , when soil water content had reached 5%.…”

Section: Discussionsupporting

confidence: 52%

“…However, plants use various strategies to survive the water restriction periods, such as roots and leaves morphological changes, osmotic adjustment, increased abscisic acid content (ABA). The capacity Ψ W reduction (osmotic adjustment) is also a common mechanism to avoid dryness in J. curcas, maintaining cell function through high RWC and stomatal closure (Fini et al, 2013;Tiwari et al, 2013;Fang and Xiong, 2014;Silva et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Morphophysiological changes in young plants of Jatropha curcas L. (Euphorbiaceae) subjected to water stress and recovery

Oliveira¹,

Silva²,

Santana³

et al. 2016

Afr. J. Agric. Res.

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To investigate drought-induced changes in morphophysiological characteristics, seedlings of two genotypes of Jatropha curcas (CNPAE 183 and CNPAE 191) were grown under two watering regimes: irrigated (-33.1 to 13.5 to kPa) and water deficit (-409.5 to 49.5 to kPa) for 55 days, followed by six days of rehydration (DAR). Withholding water led to a significant reduction (p<0.05) of leaf water potential (Ψ W ) and an increase in relative water content (RWC). The values of net photosynthetic rate (P N ), stomatal conductance to water vapor (g S ) and transpiration (E) were significantly (p<0.05) reduced 21 and 34 days after starting treatment (DAST) in plants of genotypes CNPAE 183 and CNPAE 191, respectively. After 6 DAR, only CNPAE 191 achieved a recovery of P N and E. Moreover, significantly (p<0.05) lower g S was measured in recovering plants of both genotypes, as compared to the controls. Drought stress led to reductions of 57 and 65% in whole-plant hydraulic conductance (K L ) in genotypes CNPAE 183 and CNPAE 191, respectively. Full recovery of K L was observed after 6 DAR. The average water consumption was 18% lower in plants subjected to water shortage, as compared to irrigated plants. However, drought-induced reduction in growth led to lower biomass water use efficiency (WUE biomass ) in plants subjected to water deficit. The effect of water stress was more intense in CNPAE 183 than in CNPAE 191, regarding the growth variables (leaf area, height and diameter), dry mass and root volume. Moreover, a delay in the effect of water stress in genotype CNPAE 191 was also observed, which suggests a higher tolerance of this genotype as compared to CNPAE 183. Altogether, the results showed strong drought-induced stomatal limitation of carbon assimilation and growth in J. curcas. Slight genotypic differences were detected, CNPAE 191 being less sensitive to the imposed experimental conditions than CNPAE 183.

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“…The impact of drought on photoprotective pathways has been studied in different types of plants, including woody plants (shrubs and trees) and herbs (Guan et al, 2004; Gallé et al, 2007; Zhou et al, 2007; Silva et al, 2015). However, not much information is available in semi-woody plants.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the capacity of recovery and the involved processes during recovery from drought in plants remain unclear (Flexas et al, 2006; Gallé et al, 2007). Some drought recovery reports showed that the capacity of recovery is associated with the drought tolerance of plants (Souza et al, 2004; Galmés et al, 2007b; Sapeta et al, 2013; Silva et al, 2015). Therefore, studies that would elucidate how plants recover after drought relief will be the right step in ensuring plant survival and growth under drought conditions.…”

Section: Introductionmentioning

confidence: 99%

The Synergistic Responses of Different Photoprotective Pathways in Dwarf Bamboo (Fargesia rufa) to Drought and Subsequent Rewatering

et al. 2017

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Dwarf bamboo-dominated forests are often subjected to temporary periods of drought due to rising air temperature and decreasing rainfall. Nevertheless, the relationship among CO2 assimilation, photoprotective pathways and metabolism of reactive oxygen species (ROS) remains unexplored in bamboo species. Changes in leaf gas exchange, chlorophyll fluorescence, energy partitioning, antioxidative system and compounds related to ROS metabolism in Fargesia rufa plants subjected to drought and subsequent rewatering were analyzed. Drought resulted in a reversible inhibition of photochemistry, particularly net CO2 assimilation, and lipid peroxidation due to ROS accumulation. Meanwhile, photoprotective pathways, including the water–water cycle (especially for moderate drought), and adjustment in antenna pigments, thermal dissipation and antioxidative defense capacity at organelle levels (especially for severe drought), were up-regulated at the stress phase. Conversely, photorespiration was down-regulated after drought stress. As a result, rewatering restored most of the photochemical activity under drought, especially moderate drought. Moreover, thermal dissipation under severe drought was still operated for avoiding high ROS levels after rewatering. Therefore, the synergistic function of these photoprotective pathways except photorespiration can protect the photosynthetic apparatus from oxidative damage in response to varying intensities of drought stress when CO2 assimilation is restricted. This is helpful for the gradual recovery of photosynthetic capacity after rewatering. Thus, F. rufa plants can withstand drought and is capable of survival in such environment.Highlights: The effects of drought and subsequent rewatering on Fargesia rufa were studied. Drought resulted in a reversible inhibition of photochemistry. Photoprotective pathways except photorespiration were up-regulated at the drought phase. Rewatering rapidly restored photochemical activity, especially under moderate drought. Fargesia rufa plant is capable of resisting and surviving drought environment.

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Photoprotective function of energy dissipation by thermal processes and photorespiratory mechanisms in Jatropha curcas plants during different intensities of drought and after recovery

Cited by 79 publications

References 55 publications

Short-Time of Rehydration is not Effective to Re-Establish Chlorophyll Fluorescence and Gas Exchange in Two Cowpea Cultivars Submitted to Water Deficit

Short-Time of Rehydration is not Effective to Re-Establish Chlorophyll Fluorescence and Gas Exchange in Two Cowpea Cultivars Submitted to Water Deficit

Morphophysiological changes in young plants of Jatropha curcas L. (Euphorbiaceae) subjected to water stress and recovery

The Synergistic Responses of Different Photoprotective Pathways in Dwarf Bamboo (Fargesia rufa) to Drought and Subsequent Rewatering

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