NDLI: Putative Trichoderma harzianum mutant promotes cucumber growth by enhanced production of indole acetic acid and plant colonization

Content Provider	Springer Nature Link
Author	Zhang, Fengge Yuan, Jun Yang, Xingming Cui, Yaqing Chen, Lihua Ran, Wei Shen, Qirong
Copyright Year	2012
Abstract	Many Trichoderma species are well-known by their ability to promote plant growth and health. However, few studies have been conducted to improve their ability. Laboratory and greenhouse experiments compared the promotion of cucumber growth by the putative mutant Trichoderma harzianum T-E5 versus the wild-type SQR-T037 and bio-organic fertilizers fortified with them.The putative mutant T-E5 was selected based on plant hormone production in liquid fermentation and then on the effects of T-E5 and SQR-T037 to promote plant growth and colonization of plant roots and rhizosphere soil of cucumber.High-performance liquid chromatography analysis showed that indole acetic acid (IAA) production by T-E5 was enhanced by 30.2 % as compared with SQR-T037. T-E5 treatment statistically increased cucumber plant biomass in soil and hydroponic experiments. Based on TaqMan reverse transcriptase-polymerase chain reaction, the population of T-E5 was almost ten times higher than SQR-T037 in the soil samples at 30 days. The endophytic colonization of roots and stems by the two strains had the same dynamic tendency, but T-E5 was much greater than SQR-T037 at any sampling time.The putative mutant T-E5 enhanced the production of IAA and plant colonization ability, and this improvement had a great potential for further application of T-E5 in crop production.
Starting Page	433
Ending Page	444
Page Count	12
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	368
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-11-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Trichoderma harzianum Ultraviolet irradiation Indole acetic acid Bio-organic fertilizer (BIO) Colonization Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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