Protocorms and Protocorm-Like Bodies Are Molecularly Distinct from Zygotic Embryonic Tissues in Phalaenopsis aphrodite
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چکیده
منابع مشابه
Protocorms and Protocorm-Like Bodies Are Molecularly Distinct from Zygotic Embryonic Tissues in Phalaenopsis aphrodite.
The distinct reproductive program of orchids provides a unique evolutionary model with pollination-triggered ovule development and megasporogenesis, a modified embryogenesis program resulting in seeds with immature embryos, and mycorrhiza-induced seed germination. However, the molecular mechanisms that have evolved to establish these unparalleled developmental programs are largely unclear. Here...
متن کاملPhysical wounding and ethylene stimulated embryogenic stem cell proliferation and plantlet regeneration in protocorm-like bodies of Phalaenopsis orchids.
Phalaenopsis orchids have been regenerated by inducing protocorm-like bodies (PLBs) from etiolated leaf sections. However, the physiological and molecular mechanisms of secondary PLB development and subsequent proliferation have not been explored. Bisectionally cutting primary PLBs resulted in more secondary PLBs at 5 weeks, suggesting an embryogenic stem cell property imposed by wounding of pr...
متن کاملFunctional Characterization of Phalaenopsis aphrodite Flowering Genes PaFT1 and PaFD
We show that the key flowering regulators encoded by Phalaenopsis aphrodite FLOWERING LOCUS T1 (PaFT1) and PaFD share high sequence homologies to these from long-day flowering Arabidopsis and short-day flowering rice. Interestingly, PaFT1 is specifically up-regulated during flowering inductive cooling treatment but is not subjected to control by photoperiod in P. aphrodite. Phloem or shoot apex...
متن کاملAmmonium to Nitrate Ratio Affects Protocorm Like Bodies PLB Formation In vitro of Hybrid Cymbidium
Carbon and nitrogen are the two elements that most affect plant organogenesis. In vitro, usually as part of the macronutrients. Some anecdotal evidence from the literature suggests that the ammonium (NH4+) to nitrate (NO3–) ratio may affect orchid organogenesis. In this study, to test this hypothesis, different NH4+: NO3– ratios were tested on the development of protocorm-like bodies (PLBs) of ...
متن کاملEffects of organic additives and different carbohydrate sources on proliferation of protocorm- like bodies in Dendrobium
The purpose of this study was to investigate the effect of the addition of different organic additives and sugar types as carbon source on the growth and proliferation of protocorm-like bodies (PLBs) of a very new Dendrobium hybrid known as D. Alya Pink (DAP). PLBs were supplemented with homogenates of banana, tomato, and coconut water at various concentrations. Proliferation rate was recorded ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2016
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.16.00841