Effect of Arbuscular Mycorrhiza Fungi (AMF) on Early Seedling  Growth of Some Multipurpose Tree Species

Kumar, Naresh; Kumar, Anil; Shukla, Ashok; Kumar, Sudhir; Uthappa, A.R.; Chaturvedi, O. P.

doi:10.20546/ijcmas.2017.607.400

Cited by 9 publications

(8 citation statements)

References 13 publications

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“…The DQI estimated that the biological agents increased the quality of micropropagated M. volkensii plants by about 50% under greenhouse conditions. Our results agree with [ 43 ], who reported that A. scrobiculata and Rhizophagus irregularis improved the quality of Aegle marmelos , Leucaena leucocephala and Parkia roxburghii seedlings. This can be attributed to the positive effect of AMF on plant adaptability to external conditions [ 44 ] and improved tolerance to diseases [ 45 ].…”

Section: Discussionsupporting

confidence: 93%

Early Growth Performance of In Vitro Raised Melia volkensii Gürke Plantlets in Response to Beneficial Microorganisms under Semi-Arid Conditions

Dushimimana

Sakha

Korir

et al. 2022

Plants

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Before in vitro propagated Melia volkensii plants can be used for mass planting, the transition phase to in vivo conditions needs to be better controlled because too many plants are lost during acclimatization and in the field. Two experiments were set up to evaluate the effects of biological agents on the establishment of M. volkensii in vitro plantlets. The biological agents consisted of Trichotech®, Bio-cure B®, Rhizatech®, Bacillus subtilis, a Trichoderma isolate and self-isolated native arbuscular mycorrhizal fungi (AMF). Regarding the latter, in soil from the nursery, the number of AMF spores increased from six spores to 400 per 100 g of soil using a trap culture, in which thirteen AMF morphotypes were identified and root colonization assessed through observation of hyphae, vesicles, coils and appressoria. The first experiment was set up in the greenhouse to investigate the efficacy of the biological agents on the hardening off. In the second, a field experiment was set up to study their effect on the early establishment of the plantlets in the field compared to seedlings. All biological agents significantly (p ≤ 0.05) improved in vitro plant survival and growth compared to the control. The highest plant height and number of leaves per plant were recorded in plants treated with Rhizatech®, Native AMF, Bio-cure B® and Trichoderma isolate. The treatments with Rhizatech®, Bio-cure B® and native mycorrhiza recorded a significantly wider stem. The root diameter of the plants treated with Rhizatech® and Bio-cure B® was the largest, but the plants inoculated with the native AMF had the longest roots. Moreover, the inoculated plants generally developed multiple secondary roots. After two months, AMF had clearly colonized the acclimatized plantlets. In the field experiment, the biologicals made no difference in survival rate but did produce a significantly larger leaf area after two months, with the largest leaves recorded with Rhizatech®, native AMF and Trichotech®. They also increased the quality index of the plants from 0.21 to 0.52. The performance of in vitro grown M. volkensii plants six months after planting in semi-arid conditions in Kiambere was better than that of seedlings. Inoculation of plants increased plant height and diameter. Thus, inoculation of biological agents is an efficient approach for improving the early growth of in vitro propagated M. volkensii plants.

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Section: Discussionsupporting

confidence: 93%

Early Growth Performance of In Vitro Raised Melia volkensii Gürke Plantlets in Response to Beneficial Microorganisms under Semi-Arid Conditions

Dushimimana

Sakha

Korir

et al. 2022

Plants

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“…Esta red de hifas actúa como una extensión del sistema radical de la planta, explorando un mayor volumen de suelo en busca de nutrientes poco móviles como el fósforo (Li et al 2006). En esta misma línea, Kumar et al (2017) mostraron que todos los tratamientos con MA (inoculación combinada de Acaulospora scrobiculata y Rhizophagus irregularis juntos o individualmente usando las mismas especies por separado) incrementaron el crecimiento de las especies de árboles testeados en comparación con los tratamientos no inoculados. Los autores mencionan que esta diferencia pudo deberse al mayor volumen de suelo explorado en busca de disponibilidad de nutrientes y agua, por parte de las plantas micorrizadas.…”

Section: Discussionunclassified

Colonización micorrícica de los plantines de ciprés de la cordillera en relación con la disponibilidad de fósforo y agua en vivero

et al. 2023

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The association of roots with mycorrhizal fungi increases the establishment success of forest species. Cordilleran cypress naturally forms associations with arbuscular mycorrhizae (AM). In general, the use of fertigation and artificial growth methods causes a decrease in mycorrhization, which could lead to a decrease in seedling performance in the field. The objectives of this study were: to determine whether AM colonization occurs in a nursery; to evaluate the influence of differing availability of phosphorus and substrate water status on the level of mycorrhizal colonization during plant growth; and to analyze the abundance of mycorrhization and its relationship with post-planting survival. The trial treatments were only applied during plant growth and consisted of a combination of three phosphorus concentration levels (1, 10 and 100 mg L -1 ) and two substrate water statuses (20 and 80 % of the container capacity (Cc)). The percentage of mycorrhization (% AM) was evaluated in plants grown in a nursery, in a sterilized substrate in the field, as was its survival in the field. Among the most relevant results, 24 % AM was found in the nursery while this value increased in the field (93 %), indicating that the mycorrhizal colonization process occurs during plant growth, even though it is partially inhibited by phosphorus and water management. It was also observed that the % MA increased once the plant was taken to the field independently of the % MA of the seedling in the nursery.

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“…One of the many microorganisms that live in the rhizosphere are mycorrhizal fungi. Mycorrhizae that colonize roots have the ability to significantly increase nutrient availability and heavy metal ion uptake (Kumar et al, 2017). Soil metal bioavailability can be rapidly altered by microbes, and heavy metal accumulation can be reduced by using ecological trophic level adaptation approaches (Lee et al, 2023).…”

Section: Remediation Of Heavy Metalsmentioning

confidence: 99%

Plant Growth-Promoting Bacteria (PGPB) for Sustainable Agriculture: Current Prospective and Future Challenges

Kumari,

Das

et al. 2023

AgroEnviron. Sustain.

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Sustainable agriculture is a global imperative to meet the challenges of food security and environmental protection. Plant Growth-Promoting Bacteria (PGPB) have emerged as key players in sustainable agricultural practices due to their diverse roles in enhancing plant growth, nutrient uptake, stress tolerance, and disease resistance. This review explores the diverse facts about PGPB and their potential applications in sustainable agriculture. The review begins by elucidating the mechanisms underlying PGPB-plant interactions, including phytohormone production, nutrient solubilization, and biocontrol activities. This review delves into the intricate signalling networks involved in PGPB-induced systemic resistance. In addition, this review discusses the pivotal role of PGPBs in mitigating abiotic stresses such as drought, salinity, and heavy metal toxicity, highlighting their contributions to climate-resilient agriculture. The ecological implications of PGPB application in sustainable agriculture are discussed, emphasizing the need for responsible and environmentally friendly practices. Furthermore, the use of PGPB for sustainable agriculture holds great promise for addressing the challenges of food security and environmental sustainability. In addition, this review provides a comprehensive overview of the multiple roles, mechanisms of action, and potential applications of PGPB, while emphasizing the importance of responsible and environmentally sound approaches in realizing the full potential of PGPB for a resilient and sustainable agricultural future.

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Effect of Arbuscular Mycorrhiza Fungi (AMF) on Early Seedling Growth of Some Multipurpose Tree Species

Cited by 9 publications

References 13 publications

Early Growth Performance of In Vitro Raised Melia volkensii Gürke Plantlets in Response to Beneficial Microorganisms under Semi-Arid Conditions

Early Growth Performance of In Vitro Raised Melia volkensii Gürke Plantlets in Response to Beneficial Microorganisms under Semi-Arid Conditions

Colonización micorrícica de los plantines de ciprés de la cordillera en relación con la disponibilidad de fósforo y agua en vivero

Plant Growth-Promoting Bacteria (PGPB) for Sustainable Agriculture: Current Prospective and Future Challenges

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