2020
DOI: 10.3390/plants9111440
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Influence of Polyethylene Glycol on Leaf Anatomy, Stomatal Behavior, Water Loss, and Some Physiological Traits of Date Palm Plantlets Grown In Vitro and Ex Vitro

Abstract: Few reports explain the mechanism of PEG action on stomatal behavior and anatomical structure and analyze the photosynthetic pigments of in vitro date palm plantlets for better tolerance to ex vitro exposure. The main challenge for in vitro micropropagation of date palm techniques remains restricted to high survival rates and vigorous growth after ex vitro transplantation. In vitro hardening is induced by Polyethylene glycol PEG (0.0, 10, 20, 30 g L−1) for 4 weeks. Leaf anatomy, stomatal behavior, water loss %… Show more

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Cited by 19 publications
(11 citation statements)
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“…Salinity stress proved to be detrimental to the growth and development of existing crops through induction of aberrations in physiological and biochemical processes, including chlorophyll synthesis, photosynthesis, respiration, and ion homeostasis [ 11 , 12 , 13 ]. Moreover, salinity stress negatively affects the metabolism, particularly the nitrogen or carbon assimilatory pathway, which in turn reflects reduced growth and yield [ 14 , 15 , 16 ].…”
Section: Introductionmentioning
confidence: 99%
“…Salinity stress proved to be detrimental to the growth and development of existing crops through induction of aberrations in physiological and biochemical processes, including chlorophyll synthesis, photosynthesis, respiration, and ion homeostasis [ 11 , 12 , 13 ]. Moreover, salinity stress negatively affects the metabolism, particularly the nitrogen or carbon assimilatory pathway, which in turn reflects reduced growth and yield [ 14 , 15 , 16 ].…”
Section: Introductionmentioning
confidence: 99%
“…The success of in vitro propagation depends ultimately on the successful establishment of plants in the soil. Also, as the leaves of in vitro -produced plantlets contain minimal cuticular wax and low- or nonactive stomatal systems, they are subjected to high water losses through the leaf surface (Din et al, 2020 ). Thus, the limited survival of plantlets from MS medium supplemented with 3.0 mg/L BA + 0.1 mg/L IAA can be related to their very tender structure with low developed leaves and fragile stems ( Figure 4A ) that allows for faster dehydration and consequent death.…”
Section: Discussionmentioning
confidence: 99%
“…Guard cells integrate multiple environmental signals and control the aperture width to ensure appropriate stomatal function for plant survival [ 31 ]. Therefore, guard cells have been studied extensively as a model system for scrutinizing environment sensing dynamics and mechanisms [ 25 ]. In S. leucophylla , the stem stomatal complex area measured 1.2 times larger than S. schimperiana .…”
Section: Discussionmentioning
confidence: 99%
“…Scanning Electron Microscopy (SEM) has a vital role in the discrimination between taxa within the genus [ 17 , 18 ]. Moreover, the stomatal distribution pattern is highly variable among Silene species and represents another powerful tool for species discrimination [ 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”
Section: Introductionmentioning
confidence: 99%