Changes in Cam Activity Aba, and Pas in Opuntia Ficus-Indica as Response to Drougth.

Nieddu, G.; Chessa, I.; Deidda, P.; Tekle, Z.

doi:10.17660/actahortic.1997.438.11

Cited by 4 publications

(4 citation statements)

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“…Putrescine correlated with malate accumulation during the onset of CAM metabolism, supposably serving as a buffer for cellular pH [52]. However, the relevance of putrescine reaching higher levels in irrigated compared to unwatered plants remained to be elucidated [53]. Finally, Egyptian researchers [54] [59].…”

Section: Amino Acids and Aminesmentioning

confidence: 99%

Cactus stems (Opuntia spp.): A review on their chemistry, technology, and uses

Stintzing

Carle

2005

Mol. Nutr. Food Res.

416

275

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Although traditionally used as a valuable health supporting nutrient, the vegetative parts of Opuntia spp. plants are scarcely used in modern nutrition and medicine. While all kinds of different Opuntia spp. have been studied, a systematic approach regarding the inter-relationships between the composition and the pre- and postharvest conditions is still missing. Therefore, the present review compiles and discusses literature on the chemical composition of cactus stems, the knowledge on uses in food, medicine, and cosmetics. It is concluded that much research is needed to get an insight into the multitude of bioactivities reported in the traditional literature but also to take advantage of the respective constituents for food and pharmaceutical applications.

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Section: Amino Acids and Aminesmentioning

confidence: 99%

Cactus stems (Opuntia spp.): A review on their chemistry, technology, and uses

Stintzing

Carle

2005

Mol. Nutr. Food Res.

416

275

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“…The prickly pear tree is able to store high water amounts in its succulent organs and it has a very wide (even though not deep) root system with dense and rapidly regenerating root hairs, that allow plants to effi ciently use extremely low rainfall (Mulas and Mulas 2004 ) . Prickly pear has a CAM photosynthesis and thus maintains the stomata of mature cladodes open only in the night, but, under extremely severe water deficits, the stomata remain closed all day long and so the plants use to photosynthesize only the CO 2 deriving from the respiration (Nieddu et al 1997 ) . Pimienta-Barrios et al ( 2000 ) evaluated the effects of seasonal variation in temperature, irradiation and soil moisture content on the photosynthetic rates of prickly pear.…”

Section: Prickly Pearmentioning

confidence: 99%

“…They demonstrated that this species is strongly adapted to arid climates and that stem photosynthesis by cladodes (stem modifi ed for photosynthesis that looks like leaves) allows plants to fi x carbon to be used during the periods when soil water content is very low. Drought signifi cantly affects cladode morphology and inhibits new cladode production, as these latter have a C 4 -photosynthesis and open the stomata during the day, with consequent water losses (Nieddu et al 1997 ) . Furthermore, cladodes can reach temperatures 15°C higher than the environmental ones, maintaining their enzymatic activities up to 60°C.…”

Section: Prickly Pearmentioning

confidence: 99%

Sustainable Fruit Production in Mediterranean Orchards Subjected to Drought Stress

Sofo

Palese

Casacchia³

et al. 2011

Abiotic Stress Responses in Plants

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Drought stress is the main cause of reduced fruit tree growth and productivity in Mediterranean semi-arid regions and causes a complex of responses at molecular, cellular, physiological and developmental level. In particular, the response of fruit trees to water scarcity is a species-and cultivar-dependent and a series of studies have been carried out to clarify and deepen the mechanisms of their adaptation, avoidance, resistance or tolerance against drought. Considering that 16% of the total cultivable land of the Mediterranean area is occupied by fruit crops, the choice of an appropriate and rational irrigation management is of key importance. Furthermore, plant water status in an orchard is related to many biotic and abiotic factors, such as the amount of light intercepted, plant densities and canopy architecture, which play a key role in determining orchard productivity and fruit quality. The recent research on the physiology of fruit trees and on soil chemical and biological fertility in fruit orchards have revealed that sustainable and innovative soil management systems, with a particular emphasis on water management (e.g., sustained defi cit irrigation, regulated defi cit irrigation and partial root-zone drying), can determine an optimal plant nutritional equilibrium, avoid nutrients accumulation and leaching risks, improve irrigation effi ciency and prevent soil erosion and root asphyxia. The application, optimization and innovation of sustainable agricultural techniques with a low negative environmental impact allow to recover or increase the normal levels of total fertility in fruit agro-ecosystems, so

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“…Many papers report changes in Polyamines levels in relation to several types of environmental stresses (Groppa et al, 2007). During the abiotic stress Polyamines serve as a stabilizer of cell membranes, alleviate eff ects of various kinds of stresses in diff erent organs (Mulas et al, 1998) and have a protective function in the plants under the stress conditions (Nieddu et al, 1997).…”

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confidence: 99%

Effect of exogenously application selected phytohormonal substances on the physiological and morphological indicators of Philadelphus x hybrid in containers

Jonáš¹,

Salaš²,

Baltazár³

2013

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The experiment was established in order to eliminate the effect of stress factors acting on woody plants cultivated in containers. The timber Philadelphus x hybrid ’Mont Blanc’. The timber was in 1.5 l containers. The experiment was evaluated effect of exogenouse application of phytohormonal substances on select physiological indicators (stomatal conductance, chlorophyll fluorescence and chlorophyll content), were measured three times during the vegetation. Morphological indicators (diameter of root neck, total length of shoots and number of shoots), were evaluated at the end of vegetation. Phytohormones affecting the impact of stress on plants were used for the purpose. Abscisic acid, 24- epibrassinolid, kinetin and spermine were applied by spraying the leaf in three concentrations (0.01 mg.l−1, 0.1 mg.l−1 a 1 mg.l−1). In the results were found highly significant differences compared to controls with other variants, especially in the evaluation of physiological parameters. The most significant influence on the stomatal conductance was observed in the variants treated with abscisic acid. Application 24- epibrassinolid significantly increased the chlorophyll content in comparison with control variant. Morphological parameters reached the best results in variants treated with 24- epibrassinolid and spermine.

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Changes in Cam Activity Aba, and Pas in Opuntia Ficus-Indica as Response to Drougth.

Cited by 4 publications

References 0 publications

Cactus stems (Opuntia spp.): A review on their chemistry, technology, and uses

Cactus stems (Opuntia spp.): A review on their chemistry, technology, and uses

Sustainable Fruit Production in Mediterranean Orchards Subjected to Drought Stress

Effect of exogenously application selected phytohormonal substances on the physiological and morphological indicators of Philadelphus x hybrid in containers

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