Endogenous gibberellins in bulbils of Chinese yam [Dioscorea opposita] during growth and storage

Five gibberellins in the early-13-hydroxylation pathway (GA53, GA44, GA19, GA20 and GA1), and six gibberellins in the non-13-hydroxylation pathway (GA12, GA15, GA24, GA9, GA36 and GA4), were detected in the bulbils of Chinese yam. This indicated the presence of two gibberellin biosynthetic pathways...

Full description

Saved in:
Bibliographic Details
Published in:Plant production science 2005, Vol.8 (2), p.181-185
Main Authors: Kim, S.K. (Gyeongbuk Provincial Agricultural Technology Administration, Andong (Korea R.)), Shon, T.K, Park, S.Y, Lee, S.C, Kim, H.Y, Sohn, E.Y, Jang, S.W, Choo, Y.S, Kim, K.U, Lee, I.J
Format: Article
Language:English
Subjects:
aerial parts
Agronomy. Soil science and plant productions
biochemical pathways
Biological and medical sciences
Bulbils
Chinese yam
Dioscorea
DIOSCOREA OPPOSITA
Dioscorea oppositifolia
dormancy
drug crops
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
GIBBERELLIC ACID
Gibberellins
GROWTH
harvest date
herbal medicines
PLANT VEGETATIVE ORGANS
shoots
STORAGE
storage time
temporal variation
tubers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Five gibberellins in the early-13-hydroxylation pathway (GA53, GA44, GA19, GA20 and GA1), and six gibberellins in the non-13-hydroxylation pathway (GA12, GA15, GA24, GA9, GA36 and GA4), were detected in the bulbils of Chinese yam. This indicated the presence of two gibberellin biosynthetic pathways in bulbils. The total endogenous gibberellins were dramatically increased in enlarged bulbils. The endogenous level of bioactive GA4 was always higher than that of GA1. A rapid increase in endogenous gibberellins including bioactive GA4 was observed during a 30-day storage period. These results show that gibberellins are closely related to bulbil enlargement and dormancy in Chinese yam plants. However, further research is needed for better understanding of the fluctuation of gibberellin levels in bulbils of Chinese yam during storage.
ISSN:1343-943X
1349-1008
DOI:10.1626/pps.8.181