The Potential Role of Microbial Biostimulants in the Amelioration of Climate Change-Associated Abiotic Stresses on Crops

Abstract

Crop plants are more often exposed to abiotic stresses in the current age of fast-evolving climate change. This includes exposure to extreme and unpredictable changes in climatic conditions, phytosanitary hazards, and cultivation conditions, which results in drastic losses in worldwide agricultural productions. Plants coexist with microbial symbionts, some of which play key roles in the ecosystem and plant processes. The application of microbial biostimulants, which take advantage of symbiotic relationships, is a long-term strategy for improving plant productivity and performance, even in the face of climate change-associated stresses. Beneficial filamentous fungi, yeasts, and bacteria are examples of microbial biostimulants, which can boost the growth, yield, nutrition and stress tolerance in plants. This paper highlights recent information about the role of microbial biostimulants and their potential application in mitigating the abiotic stresses occurring on crop plants due to climate change. A critical evaluation for their efficient use under diverse climatic conditions is also made. Currently, accessible products generally improve cultural conditions, but their action mechanisms are mostly unknown, and their benefits are frequently inconsistent. Thus, further studies that could lead to the more precisely targeted products are discussed.

Efforts towards overcoming drought stress in crops: Revisiting the mechanisms employed by plant growth-promoting bacteria

“…Plant development is aided by PGPM's acquisition of nutrients and secretion of phytohormones. In addition, priming of crop plants with PGPM boosts resistance to a variety of stresses, such as salt stress, heavy metals contamination, and drought (Sarkar and Rakshit, 2020;Fadiji et al, 2022;Sarkar et al, 2022). Furthermore, certain PGPMs are biocontrol agents, promoting plant development by inhibiting phytopathogens (Orhan, 2016).…”

“…The usefulness of microbial inoculations for promoting plant development exposed to drought stress has been investigated in several studies (Abdelaal et al, 2021; Frontiers in Microbiology 04 frontiersin.org Fadiji et al 10.3389/fmicb.2022.962427 Santoyo et al, 2021). PGPB are well-known for boosting the development of a variety of plants under harsh conditions, including vegetables, grains, and legumes (Sandhya et al, 2010;Abdelaal et al, 2021;Fadiji et al, 2022). PGPB are used to lessen the negative effects of environmental pressures on plant growth and production, through the enhancement of nutrient absorption and increasing tolerance to environmental stress (Ngumbi and Kloepper, 2016).…”

Response of Lettuce (Lactuca sativa L.) Plant to Bio-stimulants Under Various Irrigation Regimes in Reclaimed Sandy Soil

“…113 and increase nutrients availability (Mahdi, et al, 2021), good chelating properties, which reduce loss of nutrients due to leaching and run off (Hassan et al, 2017), Increase the activity microorganism to mobile the unavailable forms of nutrient elements and cation exchange capacity (Natsheh and Mousa, 2014 ) and production of exo-polysaccharides alongside the enrichment of nutrients and soil organic matter (Fadiji et al, 2022). Its ability to interact with metal ions and soil minerals which forming complexes of varying properties, especially phosphorus (Filip and Bielek, 2002) and increasing chemical stability.…”

A dual-omics approach for profiling plant responses to biostimulant applications under controlled and field conditions

“…For instance, weather conditions can reduce the biostimulant efficacy after foliar treatment ( Pecha et al., 2012 ). Furthermore, soil chemical and physical properties as well as the native-microbial composition exert specific effects on plants ( Fadiji et al., 2022 ). In practice, plant biostimulants are evaluated first in controlled environment to speed up the selection process of the most interesting products and eventually in the field.…”