Contrasting Physiological Responses of Jatropha curcas Plants to Single and Combined Stresses of Salinity and Heat

Silva, Evandro N.; Vieira, Suyanne A.; Ribeiro, Rafael Vasconcelos; Ponte, Luiz Ferreira Aguiar; Ferreira‐Silva, Sérgio Luiz; Silveira, Joaquim Albenísio Gomes da

doi:10.1007/s00344-012-9287-3

Cited by 69 publications

(40 citation statements)

References 47 publications

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“…Nevertheless, Silva et al (2013) demonstrated that saline solution irrigation for 14 days did not change the photochemical efficiency of photosystem II in young J. curcas plants.…”

Section: Morphologicalmentioning

confidence: 88%

“…De Lima et al (2015) also found decreased leaf dry weight (by 47.3%) and stem dry weight (by 43.2%) in castor bean 120 days after planting at irrigation water EC 3.9 dS m -1 . The most commonly used method to set the sensitivity to salinity of J. curcas is the saline irrigation water (Campos et al, 2012;Díaz-López et al, 2012;Silva et al, 2013;Hishida et al, 2014;Zhang et al, 2014); however, studies about the physiological responses of J. curcas to salinity under natural environment conditions remain scarce. Therefore, the present study was carried out in natural saline soil in order to better understand how J. curcas can tolerate saline soils.…”

Section: Introductionmentioning

confidence: 99%

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Morpho-physiological adaptation of Jatropha curcas L. to salinity stress

Cavalcante¹,

Santos²,

Filho³

et al. 2018

Aust J Crop Sci

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The aim of the current study is to assess the growth response, biochemical changes, photosynthetic pigments content and gas exchanges of physic nut (Jatropha curcas) grown under natural saline conditions. The experiment was arranged in a completely randomized design based on the following soil electrical conductivities: 0.29 dS.m -1 (control), 1.76 dS.m -1 (moderate salt concentration), 2.61 dS.m -1 (high salt concentration), 3.79 dS.m -1 (very high salt concentration). Physic nut plants were kept under saline conditions for 19 days in greenhouse. Plant growth analyses were performed on a weekly basis. Plant biomass allocation was quantified at the end of the experiment. Leaf gas exchange, stomatal conductance, Fv/Fm and quantum yield were quantified 102 days after planting. Photosynthetic pigments, amino acids, proline and carbohydrates in fresh leaf tissue were also quantified. The leaf antioxidant enzymes catalase (CAT) and ascorbate peroxidase (APX) were quantified. Although there was no alteration in biomass allocation, the initial growth of J. curcas was gradually reduced by increasing salt concentration, which was observed through reduced plant height, stem diameter, and total number of leaves. Soil electrical conductivity 3.79 dS.m -1 was lethal to seedlings. Seedlings exposed to salt stress had their photosynthesis, stomatal conductance, transpiration and effective photochemical efficiency reduced, and their catalase and ascorbate peroxidase enzyme activity increased. Amino acids, proline and carbohydrate concentrations increased due to salt stress, whereas there was decrease in the chlorophyll content. J. curcas is sensitive to soil salinity at electrical conductivity levels higher than 1.76 dS.m -1 . To some extent, salinity effects can be relieved by osmolyte accumulation and by greater antioxidant activity; however, these factors were not sufficient to keep plant growth within normal rates.

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“…Nevertheless, Silva et al (2013) demonstrated that saline solution irrigation for 14 days did not change the photochemical efficiency of photosystem II in young J. curcas plants.…”

Section: Morphologicalmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Morpho-physiological adaptation of Jatropha curcas L. to salinity stress

Cavalcante¹,

Santos²,

Filho³

et al. 2018

Aust J Crop Sci

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“…Jatropha curcas C3 Moderate Characterized as moderately tolerant [157] at salinity levels up to 100 mM NaCl [158]; salinity alone was tolerated by Jatopha curcas, but salinity (100 mM NaCl) + heat was harmful to CO 2 assimilation and membrane functioning [159]. Miscanthus spp.…”

Section: C3mentioning

confidence: 99%

“…Jatropha curcas C3 High Jatropha curcas has a high tolerance for heat [157]. A period of heat treatment was favorable for young Jatropha curcas plants, unless heat was combined with salinity [159]. Miscanthus spp.…”

Section: Cam Highmentioning

confidence: 99%

“…In contrast, multiple stressors often cause damage to growing plants, even if the plant is tolerant of a particular type of environmental stress. For example, Jatropha curcas, a highly heat-tolerant species, suffers more from the combination of salinity and heat stress than from either stressor alone [159]. Therefore, it will be important to identify the prevailing stressor(s) in the marginal area under production and choose the most tolerant biomass crops.…”

Section: Multiple Stressorsmentioning

confidence: 99%

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Stress-Tolerant Feedstocks for Sustainable Bioenergy Production on Marginal Land

et al. 2015

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Given the mandated increases in fuel production from alternative sources, limited high-quality production land, and predicted climate changes, identification of stress-tolerant biomass crops will be increasingly important. However, existing literature largely focuses on the responses of a small number of crops to a single source of abiotic stress. Here, we provide a much-needed review of several types of stress likely to be encountered by biomass crops on marginal lands and under future climate scenarios: drought, flooding, salinity, cold, and heat. The stress responses of 17 leading biomass crops of all growth habits (e.g., perennial grasses, shortrotation woody crops, and large trees) are summarized, and we identify several that could be considered "all purpose" for multiple stress types. Importantly, we note that some of these crops are or could become invasive in some landscapes. Therefore, growers must take care to avoid dissemination of plants or propagules outside of cultivation.

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