scholarly journals The NADPH Oxidases Nox1 and Nox2 Differentially Regulate Volatile Organic Compounds, Fungistatic Activity, Plant Growth Promotion and Nutrient Assimilation in Trichoderma atroviride

2019 ◽  
Vol 9 ◽  
Author(s):  
Valter Cruz-Magalhães ◽  
Maria Fernanda Nieto-Jacobo ◽  
Eline van Zijll de Jong ◽  
Michael Rostás ◽  
Fabiola Padilla-Arizmendi ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Plant Growth ◽  
Organic Compounds ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Trichoderma Atroviride ◽  
Nadph Oxidases ◽  
Fungistatic Activity ◽  
Nutrient Assimilation ◽  
Volatile Organic

scholarly journals Plant Growth Promotion by Two Volatile Organic Compounds Emitted From the Fungus Cladosporium halotolerans NGPF1

2021 ◽  
Vol 12 ◽  
Author(s):  
Lingmin Jiang ◽  
Myoung Hui Lee ◽  
Cha Young Kim ◽  
Suk Weon Kim ◽  
Pyoung Il Kim ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Plant Growth ◽  
Root System ◽  
Organic Compounds ◽  
Plant Growth Promotion ◽  
Culture Medium ◽  
Growth Promotion ◽  
System Development ◽  
Root System Development ◽  
Volatile Organic

Microbial volatiles have beneficial roles in the agricultural ecological system, enhancing plant growth and inducing systemic resistance against plant pathogens without being hazardous to the environment. The interactions of plant and fungal volatiles have been extensively studied, but there is limited research specifically elucidating the effects of distinct volatile organic compounds (VOCs) on plant growth promotion. The current study was conducted to investigate the impact of VOCs from Cladosporium halotolerans NGPF1 on plant growth, and to elucidate the mechanisms for the plant growth-promoting (PGP) activity of these VOCs. The VOCs from C. halotolerans NGPF1 significantly promoted plant growth compared with the control, and this PGP activity of the VOCs was culture medium-dependent. Headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography–mass spectrometry (GC–MS) identified two VOC structures with profiles that differed depending on the culture medium. The two compounds that were only produced in potato dextrose (PD) medium were identified as 2-methyl-butanal and 3-methyl-butanal, and both modulated plant growth promotion and root system development. The PGP effects of the identified synthetic compounds were analyzed individually and in blends using N. benthamiana plants. A blend of the two VOCs enhanced growth promotion and root system development compared with the individual compounds. Furthermore, real-time PCR revealed markedly increased expression of genes involved in auxin, expansin, and gibberellin biosynthesis and metabolism in plant leaves exposed to the two volatile blends, while cytokinin and ethylene expression levels were decreased or similar in comparison with the control. These findings demonstrate that naturally occurring fungal VOCs can induce plant growth promotion and provide new insights into the mechanism of PGP activity. The application of stimulatory volatiles for growth enhancement could be used in the agricultural industry to increase crop yield.

scholarly journals Volatile organic compounds emitted by Trichoderma species mediate plant growth

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Samantha Lee ◽  
Melanie Yap ◽  
Gregory Behringer ◽  
Richard Hung ◽  
Joan W. Bennett
Keyword(s):  
Volatile Organic Compounds ◽  
Plant Growth ◽  
Organic Compounds ◽  
Trichoderma Species ◽  
Volatile Organic

scholarly journals Plant Growth Regulators Improve the Production of Volatile Organic Compounds in Two Rose Varieties

Plants ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 35 ◽  
Author(s):  
Mohammed Ibrahim ◽  
Manjree Agarwal ◽  
Jeong Oh Yang ◽  
Muslim Abdulhussein ◽  
Xin Du ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Volatile Organic Compounds ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Organic Compounds ◽  
Growth Regulators ◽  
Naphthalene Acetic Acid ◽  
Flame Ionization ◽  
Three Phase ◽  
Volatile Organic

The study focused on the influence of the plant growth regulators (PGRs) benzyladenine (BA) and naphthalene acetic acid (NAA) on the production of volatile organic compounds (VOCs) from the flowers of two modern rose varieties, Hybrid Tea and Floribunda. Thirty-six plants of Hybrid Tea and Floribunda were tested. Benzyladenine and naphthalene acetic acid were applied at 0, 100 and 200 mg/L to both rose varieties. Gas chromatography, coupled with flame ionization detection and mass spectrometry, was used to analyze and identify the volatile organic compounds from the flowers. A three-phase fiber 50/30 µm divinylbenzene/carboxen/polydimethylsiloxane was used to capture VOCs, at 2, 4 and 8 weeks, and 4 weeks was selected as it had the highest peak area. In total, 81 and 76 VOCs were detected after treatment of both rose varieties with BA and NAA, respectively. In addition, 20 compounds, which had significant differences between different treatments, were identified from both rose varieties. The majority of VOCs were extracted after the application of 200 mg (BA and NAA) /L of formulation, and four important compounds, cis-muurola-4(141)5-diene, y-candinene, y-muurolene and prenyl acetate, increased significantly compared to the controls. These compounds are commercially important aroma chemicals. This study used the rapid and solvent-free SPME method to show that BA and NAA treatments can result in significant VOC production in the flowers of two rose varieties, enhancing the aromatic value of the flowers. This method has the potential to be applied to other valuable aromatic floricultural plant species.

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