Browsing by Author "Mariya Ansari"

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Evaluation of Trichoderma spp. as a plant growth promoter and antagonist of major pulse pathogens
(Indian Society of Pulses Research and Development (ISPRD), 2023) Mantasha Arif; Vipin Verma; Aishwarya Priyadarshini; Lovkush Satnami; Aalok Mishra; Mariya Ansari; Anirudha Chattopadhyay; Dawa Dolma Bhutia; Ankita Sarkar
Trichoderma spp. is mostly used for the management of soil-borne diseases and some foliage and fruit diseases in a variety of crop plants. It can help the environment by reducing agrochemical pollution, promoting plant growth, and enhancing plant resistance in addition to preventing plant diseases. Trichoderma spp. also functions as a secure, affordable, efficient, and environmentally friendly biocontrol agent for several crop species. In the present study, we obtained different Trichoderma isolates from rhizospheric soil samples of different locations and tested them for their antagonistic activity against major pulse pathogens. Among seven isolates, three isolates, viz., Pipal TH-2, ATH-Kashipur, and Mz/AP-2 were found to be highly effective by inhibiting the growth of Fusarium udum (64.04 to 78.65%), Fusarium ciceris (77.77 to 82.12%), Sclerotium rolfsii (59.09 to 69.30%), Macrophomina phaseolina (52.42 to 62.72%) and Alternaria alternata (80.12 to 83.22%). These isolates were also tested for growth-promoting traits (PGPR) in the present study and isolates having both plant growth-promoting ability and biocontrol potentiality were selected and preserved for further studies. These isolates of Trichoderma spp. would be a crucial partner for achieving the Green Earth goal due to their contribution to the sustainable growth of agriculture. © 2023 Indian Society of Pulses Research and Development (ISPRD). All rights reserved.
Microbial Exudates as Biostimulants: Role in Plant Growth Promotion and Stress Mitigation
(Multidisciplinary Digital Publishing Institute (MDPI), 2023) Mariya Ansari; B. Megala Devi; Ankita Sarkar; Anirudha Chattopadhyay; Lovkush Satnami; Pooraniammal Balu; Manoj Choudhary; Muhammad Adnan Shahid; A. Abdul Kader Jailani
Microbes hold immense potential, based on the fact that they are widely acknowledged for their role in mitigating the detrimental impacts of chemical fertilizers and pesticides, which were extensively employed during the Green Revolution era. The consequence of this extensive use has been the degradation of agricultural land, soil health and fertility deterioration, and a decline in crop quality. Despite the existence of environmentally friendly and sustainable alternatives, microbial bioinoculants encounter numerous challenges in real-world agricultural settings. These challenges include harsh environmental conditions like unfavorable soil pH, temperature extremes, and nutrient imbalances, as well as stiff competition with native microbial species and host plant specificity. Moreover, obstacles spanning from large-scale production to commercialization persist. Therefore, substantial efforts are underway to identify superior solutions that can foster a sustainable and eco-conscious agricultural system. In this context, attention has shifted towards the utilization of cell-free microbial exudates as opposed to traditional microbial inoculants. Microbial exudates refer to the diverse array of cellular metabolites secreted by microbial cells. These metabolites enclose a wide range of chemical compounds, including sugars, organic acids, amino acids, peptides, siderophores, volatiles, and more. The composition and function of these compounds in exudates can vary considerably, depending on the specific microbial strains and prevailing environmental conditions. Remarkably, they possess the capability to modulate and influence various plant physiological processes, thereby inducing tolerance to both biotic and abiotic stresses. Furthermore, these exudates facilitate plant growth and aid in the remediation of environmental pollutants such as chemicals and heavy metals in agroecosystems. Much like live microbes, when applied, these exudates actively participate in the phyllosphere and rhizosphere, engaging in continuous interactions with plants and plant-associated microbes. Consequently, they play a pivotal role in reshaping the microbiome. The biostimulant properties exhibited by these exudates position them as promising biological components for fostering cleaner and more sustainable agricultural systems. © 2023 by the authors.
Plant Defence Regulation Role Play of Mycorrhizal Fungi
(CRC Press, 2024) Mariya Ansari; Aalok Mishra; Anirudha Chattopadhyay; Arpan Mukherjee; Ankita Sarkar
The agriculture system of today is exhaustive and demands a frameshift of the conventional agricultural concept if ecological balance has to be sustained. Regenerative agriculture brings forward such a concept, which encompasses a solution to the ecological and biodiversity crises, along with ensuring food safety and security. Regenerative agriculture aims to sustain the resources for the present and the future by adopting various regenerative practices and methodologies. The diversified role of mycorrhiza in crop production makes it a promising candidate for achieving this target. Mycorrhiza, which evolved parallelly with plants millions of years ago, plays a key role in soil biodiversity, soil health, fertility, nutrient cycling, nutrient re-allocation, C-sequestration, crop yield, and stress alleviation through various mechanisms. The abundance of mycorrhiza, even in polluted/degraded soil areas, and its reclamation and ameliorating properties make it an important component of regenerative agriculture. Numerous ongoing researches and experiments on such associations give a conclusive idea about the compatibility and multi-dimensional role of mycorrhiza in regenerative agriculture. Incorporation and utilization of such a two-way beneficial association in regenerative agriculture become imperative due to their association with 90% of plant species. Their widespread contribution makes mycorrhizal a potential biofertilizer, biodegrader, and bioprotector of the future regenerative agriculture system. © 2024 CRC Press.