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The changing global climate affects the agroecosystem making it challenging to achieve the world’s sustainable development goals. Among the facets of belowground microbial communities, the arbuscular mycorrhizal fungi (AMF) hold an important place. They represent the most common symbiont phylum colonizing more than 80% of the plant families and are likely to be affected by global climate change. These fungi facilitate plant’s mineral acquisition, improving growth and protecting them from biotic and abiotic stresses. The elevated carbon dioxide (eCO 2 ) level, temperature, increased nitrogen and phosphorus deposition influences the plant phenology and AMF functioning through changes in diversity and community composition of AMF. The interaction effects of soil management practices due to climate change affect the system productivity and perturb mineral cycling. Understanding the carbon and nitrogen cycling of an agro-ecosystem and its associated AMF communities concerning ecosystem productivity is the need of the hour. Plant-fungal associations require a more environment resilient approach to ameliorate the effect of anthropogenic changes in carbon and nitrogen cycles. Since AMF communities alter due to local environmental conditions and land-use changes, the most adapted community may help in predicting the mycorrhizal responses to chemical fertilizers, eCO 2 , temperature and drought. In this review, we aimed at investigating (i) the diversity and community composition of AMF in relation to the change in crop and soil management practices, and (ii) how the adapted AMF communities may perform in maintaining the ecosystem resilience of these agroecosystems under climate change conditions. Hence, AMF-plant symbiosis can be effectively integrated into global climate change models. Eventually, the ecosystem resilience will be better understood to exploit the resident AMF communities to offset some of the detrimental effects of anthropogenic environmental change.

This study considered soybean processing mill waste (hulls) as an organic substrate for mass multiplication of indigenous arbuscular mycorrhizal (AM) fungi on sorghum and amaranthus as hosts. In the first experiment, from seven soybean processing mill wastes, three wastes were evaluated for their ability to multiply AM fungi on the two host plants. Among these wastes, hulls were found to be promising for the multiplication of AM fungi and were further examined in a second experiment in combination with vermicompost (VC), a mix of hulls plus vermicompost (SH + VC) amended with soil: sand mix (3:1 v/v) and a soil–sand mix used as a control (SS) in polybags containing the previous two host species. We found that SH blended with VC significantly improved AM fungus production in sorghum polybags assessed through microscopic (spore density in soil, colonization in roots) and biochemical parameters (AM signature lipids in soil: 16:1ω5cis neutral lipid fatty acid (NLFA); phospholipids fatty acid (PLFA) g−1 soil; 16:1ω5cis ester lipid fatty acid (ELFA) g−1 both in soil and roots; and glomalin content in soil. SH + VC contained significantly greater AM fungus populations than the other substrate combinations examined. Principal component analysis (PCA) also identified sorghum as a potential host supporting AM fungus populations particularly when grown under SH + VC conditions. Hence, the combination of soybean hulls and vermicompost was found to be a promising substrate for the mass production of AM fungi using sorghum as a host. These findings have important implications for developing AM fungus inoculum production strategies at the commercial scale.

Increasing high temperature (HT) has a deleterious effect on plant growth. Earlier works reported the protective role of arbuscular mycorrhizal fungi (AMF) under stress conditions, particularly influencing the physiological parameters. However, the protective role of AMF under high-temperature stress examining physiological parameters with characteristic phospholipid fatty acids (PLFA) of soil microbial communities including AMF has not been studied. This work aims to study how high-temperature stress affects photosynthetic and below-ground traits in maize plants with and without AMF. Photosynthetic parameters like quantum yield of photosystem (PS) II, PSI, electron transport, and fractions of open reaction centers decreased in HT exposed plants, but recovered in AMF + HT plants. AMF + HT plants had significantly higher AM-signature 16:1ω5cis neutral lipid fatty acid (NLFA), spore density in soil, and root colonization with lower lipid peroxidation than non-mycorrhizal HT plants. As a result, enriched plants had more active living biomass, which improved photosynthetic efficiency when exposed to heat. This study provides an understanding of how AM-mediated plants can tolerate high temperatures while maintaining the stability of their photosynthetic apparatus. This is the first study to combine above- and below-ground traits, which could lead to a new understanding of plant and rhizosphere stress.

‘How can I get my son to eat his congee?’ ‘Is it okay that my daughter cosleeps with her grandparents?’ ‘I always hand feed my children. Is that a problem?’‘Is it good to teach my children more than one language?’ More than ever, parents and caregivers seek online health information and need access to evidence-based digital health resources to inform their decision-making around their children’s health and development. We know that parents’ decision-making processes impact health behaviours and outcomes. As such, they ought to be addressed in a way that honours their diverse values and perspectives on parenting and children’s health.

The present study was conducted to assess the biocontrol activity of biosurfactants obtained from Bacillus species A5F. The variables significantly influencing the production of biosurfactants under in vitro conditions were further optimized using response surface methodology. Optimal values of selected culture variables, i.e., glucose, soybean oil, and incubation time were 3.5 g l−1, 3.5 ml l−1, and 78 h, respectively, resulting in 2.14-fold enhancement in biosurfactant levels in 5 l fermentor. Identified biosurfactants had a significant effect on chlorophyll content, shoot biomass, number of pods, and seed weight. Biosurfactants also reduced the disease incidence in S. sclerotiorum infected soybean plants and showed antagonistic action against major phytopathogens by disrupting the hyphal cell wall. 16% reduction in ITS gene copy number was observed as compared to control with less non-target effect upon biosurfactant spray on foliar parts of soybean. Thus, the study confirms that biosurfactants from strain A5F can be used as a potent biocontrol agent to control sclerotium wilt on soybean plants.

The microorganisms that colonize the plants are collectively termed as a phytomicrobiome, and plants are associated with diverse structural and functional microbial communities (bacteria, fungi, actinobacteria, archea) and constitute holobionts. The composition of the plant microbiome is highly influenced by its genotypes, developmental stages, soil conditions, and abiotic stresses. Microbial communities colonizing in the rhizosphere, rhizoplane, and endosphere induce physical and chemical changes in the plants and therefore alleviate abiotic stresses termed as induced systemic tolerance. In nature, the well‐known examples of the phytomicrobiome signaling system occur in the case of rhizobial‐legume symbiosis, mycorrhizal fungi‐roots of plants, and with many plant growth‐promoting rhizobacteria. Plant‐associated microorganisms produce various metabolites or signals for stress alleviation and plant growth promotion. Several omics‐based approaches, including genomics, transcriptomics, proteomics, glycomics, interactomics, metabolomics, and phenomics, have a huge potential in advanced studies involving the plant‐associated microbiome and their interaction with host plants.

A young male in his late 20s presented with brownish discolouration of the conjunctiva and periocular area of both eyes. He was diagnosed as a case of lepromatous leprosy with recurrent type II lepra reaction 4 years ago and was started on multidrug therapy-multi bacillary, which included clofazimine. The best-corrected visual acuity was 20/20 in both eyes. Examination revealed reddish-brown discolouration of the facial skin including the periorbital area and the eyelids, brownish discolouration of the conjunctiva with shiny sub-conjunctival deposits and multiple polychromatic refractile crystalline corneal deposits. Both eyes had clear lenses with normal fundus. On follow-up after 4 months of discontinuing clofazimine and again after 1 year, the deposits had decreased than previous visits, but they had not totally disappeared. Few studies documented similar ocular side effects of this drug. When diagnosing crystalline deposits in the cornea and conjunctiva, one should rule out clofazimine-induced crystalline keratopathy especially in a leprosy patient.

Arsenic prevalence in the environment impelled many organisms to develop resistance over the course of evolution. Tolerance to arsenic, either as the pentavalent [As(V)] form or the trivalent form [As(III)], by bacteria has been well studied in prokaryotes, and the mechanism of action is well defined. However, in the rod-shaped arsenic tolerant Deinococcus indicus DR1, the key enzyme, arsenate reductase (ArsC) has not been well studied. ArsC of D. indicus belongs to the Grx-linked prokaryotic arsenate reductase family. While it shares homology with the well-studied ArsC of Escherichia coli having a catalytic cysteine (Cys 12) and arginine triad (Arg 60, 94, and 107), the active site of D.indicus ArsC contains four residues Glu 9, Asp 53, Arg 86, and Glu 100, and with complete absence of structurally equivalent residue for crucial Cys 12. Here, we report that the mechanism of action of ArsC of D. indicus is different as a result of convergent evolution and most likely able to detoxify As(V) using a mix of positively- and negatively-charged residues in its active site, unlike the residues of E. coli . This suggests toward the possibility of an alternative mechanism of As (V) degradation in bacteria.