Rosa bourboniana Desportes.

2011 ◽  
Keyword(s):  
Rosa Bourboniana

scholarly journals Petal abscission in fragrant roses is associated with large scale differential regulation of the abscission zone transcriptome

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Priya Singh ◽  
Neeraj Bharti ◽  
Amar Pal Singh ◽  
Siddharth Kaushal Tripathi ◽  
Saurabh Prakash Pandey ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Large Scale ◽  
Scale Up ◽  
Differential Regulation ◽  
Regulatory Proteins ◽  
Comparative Transcriptome ◽  
Ethylene Sensitivity ◽  
Core Set ◽  
Genes Encoding ◽  
Rosa Bourboniana

Abstract Flowers of fragrant roses such as Rosa bourboniana are ethylene-sensitive and undergo rapid petal abscission while hybrid roses show reduced ethylene sensitivity and delayed abscission. To understand the molecular mechanism underlying these differences, a comparative transcriptome of petal abscission zones (AZ) of 0 h and 8 h ethylene-treated flowers from R. bourboniana was performed. Differential regulation of 3700 genes (1518 up, 2182 down) representing 8.5% of the AZ transcriptome was observed between 0 and 8 h ethylene-treated R. bourboniana petal AZ. Abscission was associated with large scale up-regulation of the ethylene pathway but prominent suppression of the JA, auxin and light-regulated pathways. Regulatory genes encoding kinases/phosphatases/F-box proteins and transcription factors formed the major group undergoing differential regulation besides genes for transporters, wall modification, defense and phenylpropanoid pathways. Further comparisons with ethylene-treated petals of R. bourboniana and 8 h ethylene-treated AZ (R. hybrida) identified a core set of 255 genes uniquely regulated by ethylene in R. bourboniana AZ. Almost 23% of these encoded regulatory proteins largely conserved with Arabidopsis AZ components. Most of these were up-regulated while an entire set of photosystem genes was prominently down-regulated. The studies provide important information on regulation of petal abscission in roses.

Somatic embryogenesis from immature zygotic embryos of Rosa bourboniana desp

2006 ◽  
Vol 42 (2) ◽  
pp. 124-127 ◽  
Author(s):  
Navtej Kaur ◽  
Pratap Kumar Pati ◽  
Madhu Sharma ◽  
P. S. Ahuja
Keyword(s):  
Somatic Embryogenesis ◽  
Zygotic Embryos ◽  
Immature Zygotic Embryos ◽  
Rosa Bourboniana

IN VITRO MANIPULATIONS OF ROSA BOURBONIANA L.

2008 ◽  
pp. 357-370
Author(s):  
B. Janarthanam ◽  
S. Seshadri
Keyword(s):  
Rosa Bourboniana
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