Endophytic microorganisms as potential growth promoters of banana |
| |
Authors: | Adeline S Y Ting Sariah Meon Jugah Kadir Son Radu Gurmit Singh |
| |
Institution: | (1) Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Genting Kelang, Setapak, 53300 Kuala Lumpur, Malaysia;(2) Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia;(3) Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia;(4) Research Department, United Plantations Bhd., Jenderata Estate, 36009 Teluk Intan, Perak Darul Redzuan, Malaysia |
| |
Abstract: | The potential of endophytic microorganisms in promoting the growth of their host plant was determined by artificially introducing
five isolates (bacterial and fungal strains: UPM31F4, UPM31P1, UPM14B1, UPM13B8, UPM39B3) isolated from the roots of wild
bananas into both healthy and diseased banana plantlets (Berangan cv. Intan). The response of the host plants to endophytic
infection was assessed by measuring the change in four growth parameters: plant height, pseudostem diameter, root mass and
total number of leaves. The endophytes tested as growth promoters were found to have a significant effect in both healthy
and Fusarium-infected (diseased) plantlets. In both experimental systems, the bacterial isolate UPM39B3 (Serratia) and fungal isolate UPM31P1 (Fusarium oxysporum) showed promising growth-promoting properties. Isolate UPM39B3 (Serratia) induced the largest increases in all four growth parameters in healthy plantlets – 3.14 cm (height), 1.12 cm (pseudostem
diameter), 2.12 g (root mass) and 1.12 (total number of leaves plant−1) – followed by isolate UPM31P1 (Fusarium oxysporum). The beneficial effect of UPM39B3 (Serratia) and UPM31P1 (Fusarium oxysporum) was also reflected in the diseased plantlets, where pre-treatments with the isolates either singly (T6: UPM31P1; T8: UPM39B3)
or in a mixture (T7: UPM31P1 + UPM39B3; T9: UPM14B1 + UPM13B8 + UPM39B3) were able to sustain the growth of plantlets,
with significantly higher growth values than those in diseased plantlets that were not infected with endophytes (T10: FocR4).
These results demonstrate the economic significance of these endophytic isolates, particularly UPM39B3 (Serratia) and UPM31P1 (Fusarium oxysporum), both as potential growth promoters of banana and as agents rendering tolerance towards Fusarium wilt as a strategy in the
management of Fusarium wilt of banana via improved vegetative growth. |
| |
Keywords: | Banana plantlets Diseased plants Endophytic isolates Fusarium wilt Healthy plants Potential growth promoters |
本文献已被 SpringerLink 等数据库收录! |
|