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Decreased morphogenetic potential in peach palm stem-like cells in long-term in vitro conditions

Journal of Forestry Research 2020年第2期31卷 485-495页

作者： Erika Mendes Graner Gilvano Ebling Brondani Cristina Vieira de Almeida Katherine Derlene Batagin-Piotto Marcilio de Almeida Luiz de Queiroz College of Agriculture University of Sao PauloPiracicabaSPBrazil Department of Forest Sciences Campus UniversitarioFederal University of LavrasLavrasMGBrazil In Vitro palm(Consulting Study and Biological Development Ltda.)PiracicabaSPBrazil

peach palm(Bactris gasipaes Kunth)has been micropropagated from pre-procambial cells that provide stem-like cell niches,(i.e.,pre-procambial cells),multipotent,pluripotent and totipotent for direct vascularization,adventitious buds and somatic embryogenesis,*** direct induction of adventitious buds and somatic embryogenesis reduces the frequency of mutations when compared to indirect ***-term in vitro cultivation of perennial species such as peach palm cause the clones to age and deteriorate;however,the consequences for morphogenesis potential are not fully *** morphogenic potential of peach palm clones established and in vitro cultivated for 8 years(regeneration of adventitious buds without callus formation)was investigated in leaves,roots and stem bases using histological and histochemical *** from long-term cultures(8-years-old)was compared to data from short-term cultures(1-year-old).Morphogenic pathways monitoring for direct induction of somatic embryos and adventitious buds revealed a strong morphogenic reduction potential in the pre-procambial cells,parenchyma cells in the proximal region of stem bases,and external cells of leaf *** cells of shoot apical meristems and pre-procambial cells commit cell reprogramming to the undifferentiated state and subsequent acquisition of cellular *** results are applicable in the micropropagation of peach palm,with consideration to obtaining clones and their long-term in vitro culture.

关键词： Micropropagation Multipotency Pluripotency Totipotency Pre-procambial cells peach palm Bactris gasipaes

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