High Light Intensity Increases the CAM Expression in “MD-2” Micro-Propagated Pineapple Plants at the End of the Acclimatization Stage

Rodríguez-Escriba, René C.; Rodríguez, R.; López, Delfina de Jesús Pérez; Lorente, Gustavo Y.; Pino, Yaima; Aragón, C.; Garza, Yolanda; Podestá, Florencio E.; González-Olmedo, J. L.

doi:10.4236/ajps.2015.619303

Cited by 9 publications

(16 citation statements)

References 27 publications

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“…The addition of sugar in the environment of cultivation showed a negative effect in the growing and photosynthesis in plants in vitro [22]. Besides the saccharose provoked the stimulations of the growth and the photosynthesis activity of tobacco plants in vitro [23] also in beet plants [24] and in potato plants [25]. These results indicate that the photosynthesis capacity depend mainly on the species and the environmental conditions and of cultivation that plants are submitted.…”

Section: Stomatic Conductance Transpiration and Photosynthetic Activity Of E Urograndis Plants During Photomixotrophic Conditions In Tibmentioning

confidence: 90%

Effects of Photomixotrophic Conditions on Plants of Eucalyptus Urograndis Propagated in Temporary Immersion Bioreactors

Palhares¹,

Sánchez²,

Ruiz³

et al. 2018

IJEAB

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Eucalyptus is one of the crop, which has been investigated with commercial purposes in the world. There are more than 500 species, being the Eucalyptus urograndis one of the most important, because of its intensive use in the production of wood pulp to make papers. The multiplication by means of temporary immersion bioreactors (TIB) is among the present techniques to obtain higher productions of the pulp to satisfy the demands of the market. The effects of the photomixotrophic crop were studies during the elongation of the propagation of shoots in the TIB in order to increase the quality of them. This process consisted of the use of 30 g L -1 combined with two concentration of CO2 (350 and 1200 µmol mol) and two flows of photosynthetic photon flux (PPF= 80 and 250 µmol m -2 s -1 ). The higher percentage of suitable plants were found with the treatment of high PPF (250 µmol m -2 s -1 ) and 1 200 µmol mol of CO2. The photosynthetic capacity of propagated shoots was of 64% of the adult plants. Also was observed that photomixotrophic conditions reduced the stressed environment that is imposed by the growing in vitro. The catabolic activity in the enzymes of the metabolism of carbon was also reduced, increasing the activity of the Sucrose Phosphate Synthase.

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Section: Stomatic Conductance Transpiration and Photosynthetic Activity Of E Urograndis Plants During Photomixotrophic Conditions In Tibmentioning

confidence: 90%

Effects of Photomixotrophic Conditions on Plants of Eucalyptus Urograndis Propagated in Temporary Immersion Bioreactors

Palhares¹,

Sánchez²,

Ruiz³

et al. 2018

IJEAB

Self Cite

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“…Furthermore, these studies do not describe the metabolic changes in cryo-derived plants during the transition from the in vitro to the ex vitro environment. It is known that pineapple plants undergo a shift from C3 to Crassulacean acid metabolism (CAM) when adapting to ex vitro conditions [29,30]. Therefore, this study investigates in detail, for the first time, the morpho-anatomical and physiological characteristics of cryo-derived pineapple plants during acclimatization.…”

Section: Introductionmentioning

confidence: 99%

Morpho-Anatomical and Physiological Assessments of Cryo-Derived Pineapple Plants (Ananas comosus var. comosus) after Acclimatization

et al. 2023

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Studies on the morpho-physiology of cryo-derived pineapple plants after acclimatization have been quite limited. Therefore, in the present study, the morpho-anatomical and physiological characteristics of cryo-derived Ananas comosus var. comosus ‘MD-2’ plants after acclimatization were investigated. Plants obtained from cryopreserved and non-cryopreserved shoot tips, as well as in vitro stock cultures (control), showed similar morphological development (viz. plant height, number of leaves, D leaf length, D leaf width, D leaf area, diameter of stem base, number of roots, plant fresh weight and plant dry weight) to conventionally micropropagated and non-cryopreserved plants. The pineapple plantlets developed efficient anatomical leaf structures that allowed them to adapt to the transition process from in vitro to ex vitro. In all groups of plants, the content of water and chlorophylls (a, a + b, a/b) decreased during the first 15 days of acclimatization and then remained constant until the end of the evaluation. The mesophilic succulence index increased to its maximum value after 15 days, then decreased and remained constant up to 45 days. Although physiological indicators fluctuated during the 45 days of acclimatization, no differences were observed in any of the indicators evaluated when plantlets obtained from cryopreserved shoot tips were compared with controls. The results of the plants from cryopreserved shoot tips show that they switched from C3 to Crassulacean acid metabolism, which denoted metabolic stability during acclimatization.

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“…Ethephon is basically stable under acidic conditions (pH <3.5) but decomposes to ethylene when the acidity is reduced (Silva & Caputo, 2012). The pH of pineapple leaves tissue could reach 6.5 (Prigge & Gurierrez-Soto, 2014;RodrÍguez-Escriba et al, 2015). Under such conditions, ethephon decomposes after penetration into the leaves.…”

Section: Introductionmentioning

confidence: 99%

Physical and Chemical Properties of Pineapple Fruit of cv. Pada and cv. Sarawak in Response to Flowering Hormones

Sabtu

Saupi

Ramaiya

et al. 2022

MAB

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Pineapple flowering can be stimulated through artificially induced flowering (AIF) to ensure year-round production. The post effect gains from AIF is currently not universally acknowledged by previous studies, therefore, this study aims to evaluate the physical and chemical fruit properties in response to different AIF practices on cv. Pada, and cv. Sarawak. The AIF was applied to 9-month-old plants with nine treatments being tested, consisting of calcium carbide (CaC2), naphthaleneacetic acid (NAA), and ethephon at various concentrations. The fruit samples were collected at a maturity index of 5 in order to determine its physical (total fruit weight, fruit weight without crown, total fruit length, fruit length without crown, fruit diameter, peduncle length and peduncle diameter) and chemical properties (pH, total soluble solid and titratable acidity). The results showed that the total fruit weight as well as fruit weight without crown on cv. Pada and total fruit weight on cv. Sarawak were not affected by AIF treatments. The study showed a significantly higher fruit weight in T7 (low ethephon concentration) in comparison to T10 (high ethephon concentration) and T4 (NAA treatment) was recorded on cv. Sarawak. The trend of fruit length without crown on both cultivars decreased as the hormone concentration increased. The peduncle length exhibited significantly shorter in T3 (high CaC2 concentration) for cv. Pada, and T10 (high ethephon concentration) for cv. Sarawak at 30%, and 15% shorter than other treatments, respectively. In fruit chemical properties, TSS and TA on cv. Pada showed a significant difference, this particular result may have been influenced by an external factor such as the environmental conditions during the fruit ripening stage due to differing harvesting periods between the treatments. Overall, the study suggests that the AIF treatments may affect some of the physical and chemical fruit properties either via the direct or indirect response toward AIF.

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High Light Intensity Increases the CAM Expression in “MD-2” Micro-Propagated Pineapple Plants at the End of the Acclimatization Stage

Cited by 9 publications

References 27 publications

Effects of Photomixotrophic Conditions on Plants of Eucalyptus Urograndis Propagated in Temporary Immersion Bioreactors

Effects of Photomixotrophic Conditions on Plants of Eucalyptus Urograndis Propagated in Temporary Immersion Bioreactors

Morpho-Anatomical and Physiological Assessments of Cryo-Derived Pineapple Plants (Ananas comosus var. comosus) after Acclimatization

Physical and Chemical Properties of Pineapple Fruit of cv. Pada and cv. Sarawak in Response to Flowering Hormones

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