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Morphological, anatomical and molecular investigation into witches’ broom disease of mamejvo (Enicostemma axillare Raynal)

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Title Morphological, anatomical and molecular investigation into witches’ broom disease of mamejvo (Enicostemma axillare Raynal)
Not Available
 
Creator K. Abirami
A. Sharma
J.N. Samanta
V.S. Rana
K. Mandal
 
Subject Drug quality
Enicostemma littorale
Medicinal herb
Swertiamarin
Yield loss
 
Description Not Available
Mamejvo (Enicostemma axillare Raynal) is a perennial herb with diversified health benefits. It was found to be affected by a witches’ broom disease under the field conditions at Anand, Gujarat, India. Affected plants were 53.33% reduced in height due to shortened internodes, leading to typical witches’ broom symptoms. Flower size was reduced significantly in the affected plants compared with the healthy ones and their petal color gradually turned green (virescence). Affected plants produced 2.5 times more dry herbage than the normal plants but with less active ingredient (swertiamarin). Symptomatic plants died early while root suckers from such plants failed to establish after transplanting. DAPI stained transverse sections of affected shoot tips showed the presence of discrete greenish fluorescence in the phloem cells under UV light. Amplification of 1.2 kb phytoplasma specific rDNA fragment from diseased tissue confirmed the presence of the pathogen. Further characterization of the pathogen through virtual rDNA–RFLP pattern and rDNA sequence based phylogeny suggested that the pathogen, Enicostemma witches’ broom phytoplasma, belonged to 16SrII–C group of ‘Ca Phytoplasma aurantifolia’.
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Date 2020-08-01T02:43:44Z
2020-08-01T02:43:44Z
2012-06-26
 
Type Research Paper
 
Identifier Abirami, K., Sharma, A., Samanta, J.N., Rana, V.S. and Mandal, K. 2012. Morphological, anatomical and molecular investigation into witches’ broom disease of mamejvo (Enicostemma axillare Raynal). Phytoparasitica 40: 445–450
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http://krishi.icar.gov.in/jspui/handle/123456789/38735
 
Language English
 
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Publisher Not Available