Quantification and role of organic acids in cucumber root exudates in Trichoderma harzianum T-E5 colonization

2014 ◽  
Vol 83 ◽  
pp. 250-257 ◽  
Author(s):  
Fengge Zhang ◽  
Xiaohui Meng ◽  
Xingming Yang ◽  
Wei Ran ◽  
Qirong Shen
Keyword(s):  
Organic Acids ◽  
Root Exudates ◽  
Trichoderma Harzianum ◽  
Cucumber Root

scholarly journals Organic compounds in root exudates of Miscanthus × Giganteus greef et deu and limitation of microorganisms in its rhizosphere by nutrients

2010 ◽  
Vol 58 (5) ◽  
pp. 203-208 ◽  
Author(s):  
Hana Kaňová ◽  
Joffrey Carre ◽  
Valerie Vranová ◽  
Klement Rejšek ◽  
Pavel Formánek
Keyword(s):  
Organic Acids ◽  
Organic Compounds ◽  
Respiration Rate ◽  
Root Exudates ◽  
Plant Nutrients ◽  
Rhizospheric Soil ◽  
Polluted Soils ◽  
Rhizosphere Microorganisms ◽  
Miscanthus Giganteus

This study was conducted to determine the composition of sugars and organic acids in root exudates of Miscanthus × Giganteus and to find out if microorganisms of the rhizospheric soil are limited by mi­ne­ral nutrients. The following sugars and organic acids were determined in root exudates of this plant: glucose, saccharose, and acids such as succinic, propionic, citric, tartaric, malic, oxalic, ascorbic, acetic and fumaric. Respiration of soil from rhizosphere of Miscanthus × Giganteus was found to be limited by N, K and Ca. Respiration rate after application of mineral compounds increased in following orther: nitrate > calcium > potassium > ammonium, giving approx. 165, 99, 52 and 31 % increase compared to control. Further research is necessary to determine the role of plant nutrients from the point of their limitations for rhizosphere microorganisms, to broader very rare knowledges in this topic, especially for polluted soils to stimulate efficiency of phytoremediations.

Trichoderma harzianum T-E5 significantly affects cucumber root exudates and fungal community in the cucumber rhizosphere

2013 ◽  
Vol 72 ◽  
pp. 41-48 ◽  
Author(s):  
Fengge Zhang ◽  
Zhen Zhu ◽  
Xingming Yang ◽  
Wei Ran ◽  
Qirong Shen
Keyword(s):  
Root Exudates ◽  
Fungal Community ◽  
Trichoderma Harzianum ◽  
Cucumber Root

After-Cooking Discoloration of Potatoes Role of the Organic Acids

1964 ◽  
Vol 29 (5) ◽  
pp. 555-564 ◽  
Author(s):  
E. G. HEISLER ◽  
JAMES SICILIANO ◽  
C. F. WOODWARD ◽  
W. L. PORTER
Keyword(s):  
Organic Acids

scholarly journals Complex interactions in legume/cereal intercropping system: role of root exudates in root-to-root communication

2017 ◽  
Author(s):  
Yinshan Jiao ◽  
Entao Wang ◽  
Wenfeng Chen ◽  
Donald L. Smith
Keyword(s):  
Nitrogen Fixation ◽  
Root Exudates ◽  
Faba Bean ◽  
The Novel ◽  
Practical Application ◽  
Corn Root ◽  
Complex Interactions ◽  
Root Interactions ◽  
Ecological Principles

Dear Editor,Legume/cereal intercropping systems have been regarded as the practical application of basic ecological principles such as diversity, competition and facilitation. In a recent PNAS paper, Li et al. (1) describe the novel finding that maize exudates promote faba bean nodulation and nitrogen fixation by upregulating genes involved in (iso)flavonoids synthesis (chalcone–flavanone isomerase) within faba bean, resulting in production of more genistein, a legume-to-rhizobia signal during establishment of the faba bean N2–fixing symbiosis. Although we salute the authors’ methodological efforts, there is another mechanism that could be responsible for the effect of corn root exudates on faba been nitrogen fixation observed in this article (1). The authors may misunderstand their data and the signalling role of maize exudates, thus got a defective model for the root interactions between faba bean and maize.

scholarly journals Exploration and Characterization of Trichoderma sp. in Conventional and Organic Rice field in Bali

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
A. A. S. P. R. Andriani ◽  
Idris Sharif ◽  
Bohari M Yamin ◽  
S. A. M. P. Suryani ◽  
Krisnawan Kalimutu
Keyword(s):  
Trichoderma Harzianum ◽  
Rice Field ◽  
Local Environment ◽  
High Density ◽  
Rice Cultivation ◽  
Trichoderma Spp ◽  
Plastic Container ◽  
Trichoderma Sp ◽  
Long Time

Abstract. Although Trichoderma spp has been widely used in the SRI technique of rice cultivation the sources of Trichoderma that can adapt well to the local environment have been an interesting issue for quite some time.  It is commonly agreed that the local Trichoderma is much more preferred to be used for rice cultivation. In the present study, the Trichoderma from the soil of a rice field in Sukawati District,  Bali where conventional fertilizer and pesticide has been applied for a very long time was isolated.  After macroscopic observations (green color and sweet coconut smell ) the single isolated fungi have very much resembled Trichoderma Harzianum. 2 mL of the Trichoderma Harzianum solution was introduced in a plastic container containing 200 g half-boiled rice. After seven days the rice in the plastic appeared green. This sample will be used to produce more T. Harzianum for rice cultivation. One of the T.Harzianum treated rice hosts was coated with gold and subjected to SEM observation. Very high populated T. Harzianum fungi were observed. It was  dominated by hyphae. No conidia and conidiophores were spotted. Instead, quite a high density of spherical and oval shape spores was observed. Such a high density of T.Harzianum will certainly meet the requirement for an efficient application in the cultivation field. It would also be interesting to see the interaction between such a highly populated T.Harzianum  with other fungi or pathogens in understanding the role of Trichoderma as an antipathogen

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