The Importance of Phytohormones and Microbes in Biofertilizers

Wong, Wei Chang; Tan, Swee Ngin; Ge, Liya; Chen, X.; Yong, Jean Wan Hong

doi:10.1007/978-3-319-24654-3_6

Cited by 63 publications

(44 citation statements)

References 187 publications

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“…Direct and indirect positive roles of PGPB in plants under stress have been reported [126]. The positive effects of PGPB are through the activation of 1-aminocyclopropane-1-carboxylate deaminase enzyme that reduces ethylene production and increases auxin concentration in roots [127].…”

Section: Use Of Different Tools In Mitigating Drought-induced Damagesmentioning

confidence: 99%

Response of Mediterranean Ornamental Plants to Drought Stress

2019

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Ornamental plants use unique adaptive mechanisms to overcome the negative effects of drought stress. A large number of species grown in the Mediterranean area offer the opportunity to select some for ornamental purposes with the ability to adapt to drought conditions. The plants tolerant to drought stress show different adaptation mechanisms to overcome drought stress, including morphological, physiological, and biochemical modifications. These responses include increasing root/shoot ratio, growth reduction, leaf anatomy change, and reduction of leaf size and total leaf area to limit water loss and guarantee photosynthesis. In this review, the effect of drought stress on photosynthesis and chlorophyll a fluorescence is discussed. Recent information on the mechanisms of signal transduction and the development of drought tolerance in ornamental plants is provided. Finally, drought-induced oxidative stress is analyzed and discussed. The purpose of this review is to deepen our knowledge of how drought may modify the morphological and physiological characteristics of plants and reduce their aesthetic value-that is, the key parameter of assessment of ornamental plants.

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Section: Use Of Different Tools In Mitigating Drought-induced Damagesmentioning

confidence: 99%

Response of Mediterranean Ornamental Plants to Drought Stress

2019

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“…PGPRs induce various mechanisms that can affect plant growth. These mechanisms include nitrogen fixation, phosphorus and zinc solubilization [43]. In non-limiting conditions of light, water and mineral nutrients, cytokinins secreted by PGPR are known to drive plant growth by expediting the processing of metabolites through the various plant cell cycle checkpoints, resulting in production of more cells [43].…”

Section: Am Fungi Can Play a Significant Role In Crop Health Improvementmentioning

confidence: 99%

“…Prominent mediator molecules of these interactions are inorganic and organic microbial volatile compounds (mVOCs) and about 300 bacteria and fungi are known as VOC producers and approximately 800 mVOCs were compiled in DOVE-MO (database of volatiles emitted by microorganisms) [44]. PGPRs are also known to secrete phytohormones, such as cytokinins, and could be cultured and developed as a biofertilizer [43]. Plant-originated cytokinins, already known for promoting cell division, nutrient mobilization and leaf longevity [45] are considered to mediate plant immunity through salicylic acid (SA) signaling [46].…”

Section: Am Fungi Can Play a Significant Role In Crop Health Improvementmentioning

confidence: 99%

Utility of Arbuscular Mycorrhizal Fungi for Improved Production and Disease Mitigation in Organic and Hydroponic Greenhouse Crops

Mishra¹,

Ellouze²,

Howard³

2018

J Hortic

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This article discusses the utility of AM fungi in vegetable crop organic and hydroponic greenhouse production systems. A significant amount of work on field and organic crops utilizing AM fungi have proven their effectiveness in vegetable crops. The current article also addresses the major benefits of AM fungal application in nonhydroponic greenhouses, such as disease mitigation and improved production, and envisages the idea of utilizing some of these benefits for hydroponic greenhouse crops by designing appropriate experimental trials and performing a cost-benefit analysis while conducting such trials. AbstractArbuscular mycorrhizal (AM) fungi are considered to be enormously important in contemporary agriculture and horticulture for their ability to improve crop disease and fertility management in commercial field and greenhouse crop production. Recently, commercial greenhouse producers have begun using AM inoculum to increase yields and provide sustainable growing conditions in organic and hydroponic production systems. However, strong evidence in support of their effectiveness in hydroponic production is still lacking. Future research is expected to address benefits of the use of AM fungi in hydroponic greenhouse crops, such as defense against pathogen, herbivore attack and the effective management of photo-assimilates by plants, which are essential for fruit production. In order to increase our understanding of the usefulness of AM fungi in hydroponic greenhouses, large-scale trial and a cost-benefit evaluation of the process are needed. This article discusses the use of AM fungi for improving organic and hydroponic greenhouse crop production and disease control, considering that AM fungi inoculations in soil-based greenhouses and fields have proven to be very effective.

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“…Por otra parte, las micorrizas contribuyen a la captación y transferencia de fósforo a la planta a partir del incremento del volumen de la raíz y actividad de polifosfatoquinasas y fosfatasas alcalinas (Sierra, 2008 Algunas de las funciones reguladoras del crecimiento vegetal de las fitohormonas, producidas por microorganismos rizosféricos, incluyen la división y expansión celular, alargamiento celular, alargamiento del tallo, crecimiento de las raíces, activación del crecimien-to de los brotes, desarrollo de las ramas, la promoción o el retraso en la senescencia foliar y la producción de clorofila; todas estas funciones pueden ser aprovechadas con el uso de estos microorganismos en biofertilizantes (Wong, Tan, Ge, Chen, y Yong, 2015).…”

Section: Solubilización De Fosfatounclassified

Biofertilizantes en Colombia

Lavalle¹,

Anillo²,

Pérez³

2017

Productos De Confitería Nutracéutica

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Una opción empresarial para cultivadores de frutas y hortalizas U n i v e r s i d a d S i m ó n B o l í v a r RESUMEN En Colombia, el Instituto Colombiano Agropecuario (ICA) es la entidad encargada de regular la producción y comercialización de bioinsumos de uso agrícola. El presente estudio tuvo como objetivo describir los inoculantes biológicos producidos en el país que actúan como biofertilizantes. Para esto se consultó el listado de productos bioinsumos del ICA y se analizó a través Microsoft® Excel2010, y el programa SPSS 21.0® las variables, lugar de producción, ingredientes activos, tipo de formulación, actividad biológica y cultivos autorizados. Se encontró que la mayor producción de inoculantes se concentra en el departamento de Cundinamarca; asimismo, los principales microorganismos utilizados para el desarrollo de estos productos correspondieron a los hongos micorrizcos del género Glomus y Acaulospora, así como a las bacterias Azotobacter chroocoocum y Bradyrhizobium japonicum. La mayor parte de los inoculantes ostenta actividades biológicas varias y se presentan bajo formulación de tipo sólida. El arroz constituye el cultivo más frecuente de aplicación de los inoculantes. El trabajo permitió concluir que hay una nula producción de inoculantes biológicos en la mayoría de departamentos que conforman la región Caribe, en los cuales se producen cultivos de gran importancia para la seguridad alimentaria del país.Palabras clave: Biofertilizantes, rizobacterias promotoras de crecimiento vegetal, micorrizas arbusculares, Colombia. ABSTRACTIn Colombia, the Colombian Agricultural Institute (ICA) is the entity in charge of regulating the production and commercialization of bioinoculants for agricultural use. The present study had as objec-tive to describe the biological inoculants produced in the country that act as biofertilizers. For this we consulted the ICA bioinoculants products list and were analyzed through Microsoft® Excel 2010 and the program SPSS 21.0® the variables production location, active ingredients, type of formulation, biological activity and authorized crops. It was found that the highest production of inoculants is concentrated in the Cundinamarca department; furthermore, the main microorganisms used for these products development were the mycorrhizal fungi belonging to the genus Glomus and Acaulospora, also the bacteria Azotobacter chroocoocum and Bradyrhizobium japonicum. Most inoculants have various biological activities and are presented under a solid type formulation. Rice is the most frequent crop in which inoculants are applied. The work allowed concluding that there is not biological inoculants production in most of Caribbean Region departments in which great importance crops for the country food security are produced.

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The Importance of Phytohormones and Microbes in Biofertilizers

Cited by 63 publications

References 187 publications

Response of Mediterranean Ornamental Plants to Drought Stress

Response of Mediterranean Ornamental Plants to Drought Stress

Utility of Arbuscular Mycorrhizal Fungi for Improved Production and Disease Mitigation in Organic and Hydroponic Greenhouse Crops

Biofertilizantes en Colombia

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