Allelopathic effects of celery on Fusarium oxysporum f.sp. apii
Journal
Taiwanese Journal of Agricultural Chemistry and Food Science
Journal Volume
55
Journal Volume
55
Journal Issue
3-4
Journal Issue
3-4
Pages
146-152
Start Page
146
End Page
152
ISSN
16052471
Date Issued
2017-06
Author(s)
Liu, Yao-Te
Abstract
In Taiwan, succession cropping obstacle has been a serious problem for celery cultivation. Previous studies concluded that succession cropping obstacle of celery could be due to (1) Fusarium yellows of celery caused by Fusarium oxysporum f. Sp. apii (Foa), and (2) allelopathy of celery due to phenolic compounds produced by celery from the previous growing season. The objective of this study was to clarify whether these two factors could interact with each other to exacerbate the problem. The results showed that water extract of celery and the major phenolic compound of it, i.e., gallic acid, could inhibit germination and radicle growth of celery seed. They could also promote spore germination, germ-tube growth and sporulation of Foa. Furthermore, determination of the total phenolic content in water extract of celery using the Folin-Ciocalteu method indicated that Foa could reduce the total phenolic content during spore germination and growth. In conclusion, the allelopathic chemicals secreted from the celery roots or leaked out of the plant debris in the soil could not only affect seed germination of celery in the next growing season but also serve as nutrient for spore germination and growth of Foa. Growth of celery could be inhibited by a synergistic effect of allelopathy and Foa; therefore, in the future, if a two-pronged approach to tackle down these two factors at the same time can be developed, effective alleviation of the loss caused by succession cropping obstacle of celery in the field can be achieved.
Subjects
Allelopathy
Fusarium oxysporum f. Sp. apii
Fusarium yellows of celery
Gallic acid
Succession cropping obstacle
Publisher
Chinese Agricultural Chemical Society
Type
journal article