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Putrescine and polyamine inhibitors in culture medium alter in vitro rooting response of Decalepis hamiltonii Wight & Arn.

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Relation http://ir.cftri.com/12753/
http://dx.doi.org/10.1007/s11240-016-1108-0
 
Title Putrescine and polyamine inhibitors in culture medium alter
in vitro rooting response of Decalepis hamiltonii Wight & Arn.
 
Creator Pradeep, Matam
Giridhar, P.
 
Subject 05 Tissue Culture
04 Medicinal Plants
 
Description The influence of polyamine putrescine (PUT),
and polyamine inhibitors were tested for in vitro rooting
response from micro shoots that initially established on
Murashige and Skoog (MS) medium comprising 2.7 μM
α-Naphthaleneacetic acid (NAA) and 8.9 μM 6-Benzylaminopurine
(BA) by using nodal explants of Decalepis
hamiltonii. Incorporation of putrescine alone in rooting
medium devoid of auxins supported the best response for
in vitro rooting qualitatively and quantitatively. Incorporation
of putrescine at 50 μM able to induce 8.62 ± 1.93 roots
with a maximum root length of 9.10 ± 1.65 cm wherein, the
root fresh weight was also found to be high compared to
all other treatments (5.248 ± 1.71 g). Addition of putrescine
inhibitor cyclohexylamine (CHA) in medium curtailed rooting
response from microshoots. Among the three polyamine
inhibitors, CHA in presence of 9.8 μM Indole-3-butyric acid
(IBA) outperformed α-DL-difluromethylarginine (DFMA)
and α-DL-difluoromethylornithine (DFMO) combination
with 9.8 μM IBA. The least response for root number
(1.55 ± 0.72), root length (1.96 ± 0.45 cm), and root weight
(1.94 ± 0.35 g) was found for IBA + PUT + DFMA and the
best response was noted for IBA + PUT + CHA (2.6 ± 1.1,
2.92 ± 0.73 cm, 3.03 ± 0.75 g) respectively. Endogenous
content of putrescine, spermidine and spermine supported
the rooting response from in vitro shoots. These results
have clearly demonstrated that putrescine plays a crucial
role in rooting of D. hamiltonii. Plantlets were transferred to micro-pots for a short acclimatization stage in greenhouse
where they survived at 90 %. This highly reproducible
procedure can be adopted for large scale swallow root
propagation. Overall, supplementing putrescine in the rooting
medium enhances the quantity and quality of roots in
D. hamiltonii, thus confirming its role.
 
Date 2017
 
Type Article
PeerReviewed
 
Format pdf
 
Language en
 
Identifier http://ir.cftri.com/12753/1/Plant%20Cell%20Tiss%20Organ%20Cult%20%282017%29%20128273%E2%80%93282.pdf
Pradeep, Matam and Giridhar, P. (2017) Putrescine and polyamine inhibitors in culture medium alter in vitro rooting response of Decalepis hamiltonii Wight & Arn. Plant Cell Tissue and Organ Culture, 128. pp. 273-282.