Photosynthesis, photoprotection and antioxidant activity of purging nut under drought deficit and recovery

Pompelli, Marcelo F.; Barata-Luís, Ricardo; Vitorino, Hermerson S.; Gonçalves, Eduardo Rebêlo; Rolim, Eduardo Vicente; Santos, Mariana; Almeida-Cortez, Jarcilene S.; Ferreira, Vilma Marques; Lemos, Eurico Eduardo Pinto de; Endres, Laurício

doi:10.1016/j.biombioe.2010.03.011

Cited by 136 publications

(100 citation statements)

References 36 publications

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“…However, g S shown by rehydrated plants remained significantly different from that of control plants. 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 .…”

Section: Discussionmentioning

confidence: 74%

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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Section: Discussionmentioning

confidence: 74%

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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“…Our results indicate that the ROS-scavenging system is not enough to protect J. curcas leaves against oxidative damage caused by salt stress. As tolerant plants generally respond to abiotic stress, by increasing their antioxidant capacity to restore normal cellular equilibrium between productions and scavenging of ROS, these data suggest that J. curcas is not tolerant to salt stress as it is to water deficit (Pompelli et al, 2010a). Then, the ability of J. curcas to produce ecologically and socioeconomically viable amounts of energy in barren/sodic land requires further exploration.…”

Section: Discussionmentioning

confidence: 99%

“…Cellular damage was analyzed through H 2 O 2 accumulation spectrophotometrically after a reaction with KI (Alexieva et al, 2001), malondialdehyde (MDA) accumulation, estimated as the amount of total 2-thiobarbituric acid-reactive compound (Cakmak and Horst, 1991); and electrolyte leakage, assayed immediately after leaf sampling by using the conductivity meter previously described (Alexieva et al, 2001). Key antioxidant enzymes, including APX (EC 1.11.1.11) and CAT (EC 1.11.1.6), were assayed exactly as described by Pompelli et al (2010a). Chl and total carotenoids were extracted using 80% (v/v) aqueous acetone and quantified spectrophotometrically, according to Lichtenthaler, in 1987. Leaf disks (each 1.3 cm in diameter) were collected with a cork borer from the same leaves used for P N measurements and were used to determine the leaf relative water content (RWC), based on the method of Matin et al (1989), with some modifications.…”

Section: Biochemical Measurementsmentioning

confidence: 99%

“…There is little information available on the ecosystems where J. curcas naturally occurs (Behera et al, 2010). However, it is well-known that J. curcas is a drought-resistant plant (Zhang et al, 2007;Behera et al, 2010;Pompelli et al, 2010a), able to grow where most other crops cannot survive (Openshaw, 2000;Reubens et al, 2011). Its seeds contain 25 to 32% oil (Pompelli et al, 2010b), with yields of 1.5 tons of oil per hectare after five years of growth (Openshaw, 2000;Tiwari et al, 2007;King et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Its seeds contain 25 to 32% oil (Pompelli et al, 2010b), with yields of 1.5 tons of oil per hectare after five years of growth (Openshaw, 2000;Tiwari et al, 2007;King et al, 2009). Furthermore, J. curcas is well-adjusted to semiarid climate, although more humid environmental conditions result in better crop performance (Foidl et al, 1996;Openshaw, 2000;Tiwari et al, 2007;Maes et al, 2009;Achten et al, 2010;Behera et al, 2010;Pompelli et al, 2010a;Reubens et al, 2011). These promising characteristics of J. curcas have resulted in numerous plantation initiatives in the semiarid tropics (Behera et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Photosynthesis and antioxidant activity in Jatropha curcas L. under salt stress

Campos

Hsie

Granja

et al. 2012

Braz. J. Plant Physiol.

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Biodiesel is an alternative to petroleum diesel fuel. It is a renewable, biodegradable, and nontoxic biofuel. Interest in the production of biodiesel from Jatropha curcas L. seeds has increased in recent years, but the ability of J. curcas to grow in salt-prone areas, such as the Caatinga semiarid region, has received considerably meager attention. The aim of this study was to identify the main physiological processes that can elucidate the pattern of responses of J. curcas irrigated with saline water, which commonly occurs in the semiarid Caatinga region. This study measured the activity of the antioxidant enzymes involved in the scavenging of reactive oxygen species, which include catalase (CAT) and ascorbate peroxidase (APX), as well as malondialdehyde (MDA) levels. The levels of chlorophyll (Chl), carotenoids, amino acids, proline, and soluble proteins were also analyzed. The net carbon assimilation rate (P N ), stomata conductance (g s ), and transpiration rate (E) decreased with salt stress. The activities of CAT and APX were decreased, while H 2 O 2 and MDA levels as well as electrolyte leakage were significantly increased in salt-stressed plants compared to the untreated ones. These observations suggest that the ability of J. curcas plants resist to salt stress is associated with the activities of protective enzymes and their defensive functions. However, our results indicate that the reactive oxygen species scavenging system is not sufficient to protect J. curcas leaves against oxidative damage caused by salt stress, and, therefore, it cannot be treated as a salt tolerant plant species.

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Physiological Mechanisms Involved with Salt and Drought Tolerance in Jatropha curcas Plants

Silveira

Silva

Ferreira‐Silva

et al. 2012

Jatropha, Challenges for a New Energy Crop

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Photosynthesis, photoprotection and antioxidant activity of purging nut under drought deficit and recovery

Cited by 136 publications

References 36 publications

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

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

Photosynthesis and antioxidant activity in Jatropha curcas L. under salt stress

Physiological Mechanisms Involved with Salt and Drought Tolerance in Jatropha curcas Plants

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