Abstract
Selaginella, an extant genus of primitive
vascular plants, has survived over 400 million years of
evolution. In vitro morphogenesis in Selaginella microphylla
is considered for the first time to establish a welldocumented
aseptic culture on half- strength Murashige
and Skoog’s basal medium with 2ip (4.92–49.21 lM), or
Kn (4.65–46.47 lM) or GA3 (2.89–28.90 lM) for shoot
multiplication, and with different concentrations of IBA
(4.9–49 lm) to initiate root cultures. GA3 was instrumental
for shoot multiplication as well as induction of reproductive
structures in each and every leaf axil. On the other
hand, it is observed that IBA alone in S. microphylla can
act as signal molecules for induction of enormous numbers
of root masses from a few existing roots. An interesting
pattern of re-differentiation has also been observed where
apical portions of large numbers of roots were converted to
green shoot apical meristems. Further differentiation produced
tiny green shoots. Distinct bipolarity was noted in
shoots when they were isolated from root masses and
appeared as embryo-like structures. Chromosome analysis
from in vitro sporophytic plants revealed 2n = 16 chromosomes,
indicating chromosomal stability. The interesting in
vitro pattern of morphogenesis obtained in S. microphylla
may provide new insights into totipotency of plants.
Abstract Selaginella, an extant genus of primitivevascular plants, has survived over 400 million years ofevolution. In vitro morphogenesis in Selaginella microphyllais considered for the first time to establish a welldocumentedaseptic culture on half- strength Murashigeand Skoog's basal medium with 2ip (4.92–49.21 lM), orKn (4.65–46.47 lM) or GA3 (2.89–28.90 lM) for shootmultiplication, and with different concentrations of IBA(4.9–49 lm) to initiate root cultures. GA3 was instrumentalfor shoot multiplication as well as induction of reproductivestructures in each and every leaf axil. On the otherhand, it is observed that IBA alone in S. microphylla canact as signal molecules for induction of enormous numbersof root masses from a few existing roots. An interestingpattern of re-differentiation has also been observed whereapical portions of large numbers of roots were converted togreen shoot apical meristems. Further differentiation producedtiny green shoots. Distinct bipolarity was noted inshoots when they were isolated from root masses andappeared as embryo-like structures. Chromosome analysisfrom in vitro sporophytic plants revealed 2n = 16 chromosomes,indicating chromosomal stability. The interesting invitro pattern of morphogenesis obtained in S. microphyllamay provide new insights into totipotency of plants.
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Abstract
Selaginella, an Extant genus of Primitive
Plants vascular, has survived over 400 million years of
Evolution. In vitro morphogenesis in Selaginella microphylla
is considered for the First time to establish a Welldocumented
Aseptic Culture on Half strength Murashige
and Skoog's basal Medium with 2ip (LM 4.92 to 49.21), or
Kn (LM 4.65 to 46.47) or GA3 (2.89 to 28.90. LM) for shoot
Multiplication, and with different concentrations of IBA
(4.9-49 LM) to initiate root Cultures. GA3 was instrumental
as well as induction of Multiplication shoot for Reproductive
Structures in each and every Leaf axil. On the Other
Hand, it is observed that IBA alone in S. microphylla Can
Act as Signal molecules for induction of enormous Numbers
of root masses from a few existing Roots. An Interesting
Pattern of re-differentiation has also been observed where
apical Portions of Large Numbers of Roots were converted to
shoot apical meristems Green. Further differentiation produced
tiny Green shoots. Distinct bipolarity was noted in
shoots when they were isolated from root masses and
appeared as embryo-like Structures. Analysis chromosome
from in vitro 2n = 16 chromosomes revealed Sporophytic Plants,
Indicating chromosomal stability. Interesting the in
vitro morphogenesis Pattern of S. microphylla obtained in
May provide insights Into New Totipotency of Plants.
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Abstract.Selaginella an extant, genus of primitive.Vascular plants has survived, over 400 million years of.Evolution. In vitro morphogenesis in Selaginella microphylla.Is considered for the first time to establish a welldocumented.Aseptic culture on half - strength Murashige.And Skoog "s basal medium with 2ip (4.92 - 49.21 lM), or.Kn (4.65 - 46.47 lM) or GA3 (2.89 - 28.90 lM) for shoot.Multiplication and with, different concentrations of IBA.(4.9 - 49 LM) to initiate root cultures. GA3 was instrumental.For shoot multiplication as well as induction of reproductive.Structures in each and every leaf axil. On the other.Hand it is, observed that IBA alone in S. Microphylla can.Act as signal molecules for induction of enormous numbers.Of root masses from a few existing roots. An interesting.Pattern of re-differentiation has also been observed where.Apical portions of large numbers of roots were converted to.Green shoot apical meristems. Further differentiation produced.Tiny green shoots. Distinct bipolarity was noted in.Shoots when they were isolated from root masses and.Appeared as embryo-like structures. Chromosome analysis.From in vitro sporophytic plants revealed 2n = 16, chromosomesIndicating chromosomal stability. The interesting in.Vitro pattern of morphogenesis obtained in S. Microphylla.May provide new insights into totipotency of plants.
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