Influence of arbuscular mycorrhiza fungi and drought stress on fatty acids profile of sesame (Sesamum indicum L.)

Gholinezhad, Esmaeil; Darvishzadeh, Reza

doi:10.1016/j.fcr.2020.108035

Cited by 29 publications

(28 citation statements)

References 31 publications

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“…Our results show increased oleic and decreased linoleic fatty acids in phytoplasma-infected sesame plants, compared to healthy plants. This trend is partially consistent with Gholinezhad and Darvishzadeh's [83] results on the fatty acid profile of oil derived from sesame affected by drought as abiotic stress. A major cause of the increase in oleic fatty acid under phytoplasma infection-induced stress is the sesame plant's earlier maturity, which will manifest a shorter duration of oilseed filling and a shorter period for converting oleic to linoleic fatty acid [84].…”

Section: Discussionsupporting

confidence: 90%

Effect of Phytoplasma Associated with Sesame Phyllody on Ultrastructural Modification, Physio-Biochemical Traits, Productivity and Oil Quality

Ahmed

Farrag

Kheder

et al. 2022

Plants

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Phytoplasmas are obligate cell-wall-less plant pathogenic bacteria that infect many economically important crops, causing considerable yield losses worldwide. Very little information is known about phytoplasma–host plant interaction mechanisms and their influence on sesame yield and oil quality. Therefore, our aim was to explore the ultrastructural and agro-physio-biochemical responses of sesame plants and their effects on sesame productivity and oil quality in response to phytoplasma infection. Sesame leaf samples exhibiting phyllody symptoms were collected from three experimental fields during the 2021 growing season. Phytoplasma was successfully detected by nested- polymerase chain reaction (PCR) assays using the universal primer pairs P1/P7 and R16F2n/R16R2, and the product of approximately 1200 bp was amplified. The amplified product of 16S rRNA was sequenced and compared with other available phytoplasma’s 16S rRNA in the GenBank database. Phylogenetic analysis revealed that our Egyptian isolate under accession number MW945416 is closely related to the 16SrII group and showed close (99.7%) identity with MH011394 and L33765.1, which were isolated from Egypt and the USA, respectively. The microscopic examination of phytoplasma-infected plants revealed an observable deterioration in tissue and cell ultrastructure. The primary and secondary metabolites considerably increased in infected plants compared with healthy ones. Moreover, phytoplasma-infected plants showed drastically reduced water content, chlorophyll content, growth, and yield components, resulting in 37.9% and 42.5% reductions in seed and oil yield, respectively. The peroxide value of the infected plant’s oil was 43.2% higher than that of healthy ones, suggesting a short shelf-life. Our findings will provide a better understanding of the phyllody disease pathosystem, helping us to develop effective strategies for overcoming such diseases.

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Section: Discussionsupporting

confidence: 90%

Effect of Phytoplasma Associated with Sesame Phyllody on Ultrastructural Modification, Physio-Biochemical Traits, Productivity and Oil Quality

Ahmed

Farrag

Kheder

et al. 2022

Plants

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“…Overall, AMF play a beneficial role in producing metabolites such as essential oil (Pirzad and Mohammadzadeh 2018), fatty acids (Rahimzadeh and Pirzad 2019), phytohormones (Kadam et al 2020), amino acids (Zhang et al 2020), antioxidant enzymes (Piri et al 2019, Zou et al 2020, and adjusting plant physiological statuses such as carbon dioxide exchange amount (Thirkell et al 2020), stomatal conductance (Boutasknit et al 2020), photosynthetic pigments, proline content (Alam et al 2019), and phenolic content (Bencherif et al 2019). It has been demonstrated that AMF can enhance photosynthesis activities and stomatal movement by developing the root systems (Gholinezhad and Darvishzadeh 2021). Indeed, root colonization by mycorrhizal mycelium not only bolsters the root systems but also facilities the absorption of water and nutrient from larger soil volumes against drought stress (Paravar et al 2021).…”

Section: Arbuscular Mycorrhizal Fungimentioning

confidence: 99%

“…It is well known that PBM and their interactions with plants play an important part in the confirmation of ecological vegetation and sustaining physical structures in soils and nutrient cycling (Chen et al 2020). Seed coating with PBM can reduce challenges regarding soil moisture variables, low soil nutrients, pathogens in the environment (Gornish et al 2019). For instance, the inoculation of Aspergillus sp.…”

Section: Ecological Restoration By a Beneficial Microorganismmentioning

confidence: 99%

Microbial seed coating: an attractive tool for sustainable agriculture

Paravar

Piri

Balouchi

et al. 2022

Preprint

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Today, the issue of crop yield and quality is one of the many challenges facing societies. Residues of pesticides, chemical fertilizers, hormonal compounds, and preservatives have caused many environmental issues. It is necessary to reduce these environmental crises by paying attention to the development of sustainable agriculture. Seed coating is considered one of the best methods to promote sustainable agriculture where the physical and physiological properties of seeds can be improved to facilitate planting, increase growth indices and alleviate abiotic and biotic stresses. Several methods of seed coating (e.g., dry powder coating, seed dressing, encrusting, seed pelleting, and film coating) are used to attain good application uniformity and adherence in the seed coating process. Seed coating has been tested in seeds of various plant species (e.g., vegetables, medicinal and other plants with small seeds) with different dimensions, forms, textures, and germination types. Plant beneficial microorganisms (PBM), such as rhizobia, bacteria, and fungi inoculated via seed inoculation can increase seed germination, plant performance and tolerance across biotic (e.g., pathogens and pests) and abiotic stress (e.g., salt, drought, and heavy metals) while reducing the use of agrochemical inputs. In this review, the microbial seed coating process and their ability to increase seed performance and protect plants from biotic and abiotic stresses are well discussed and highlighted in sustainable agricultural systems.

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“…F . mosseae and Rhizophagus intraradices also increased UFA contents and reduced SFA contents, in sesame plants, as well as increasing the level of non-enzymatic antioxidants under DS conditions ( Gholinezhad and Darvishzadeh, 2021 ). Soybean plants inoculated with AM fungi combined with Rhizobium cellulosilyticum strain R3 also exhibited the highest percentage of UFAs, a feature that is beneficial to human health ( Igiehon et al, 2021 ).…”

Section: Drought-stress Adaptive Mechanisms Induced In Plants By Arbuscular Mycorrhizal Fungimentioning

confidence: 99%

Elucidating the Mechanisms Underlying Enhanced Drought Tolerance in Plants Mediated by Arbuscular Mycorrhizal Fungi

et al. 2021

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Plants are often subjected to various environmental stresses during their life cycle, among which drought stress is perhaps the most significant abiotic stress limiting plant growth and development. Arbuscular mycorrhizal (AM) fungi, a group of beneficial soil fungi, can enhance the adaptability and tolerance of their host plants to drought stress after infecting plant roots and establishing a symbiotic association with their host plant. Therefore, AM fungi represent an eco-friendly strategy in sustainable agricultural systems. There is still a need, however, to better understand the complex mechanisms underlying AM fungi-mediated enhancement of plant drought tolerance to ensure their effective use. AM fungi establish well-developed, extraradical hyphae on root surfaces, and function in water absorption and the uptake and transfer of nutrients into host cells. Thus, they participate in the physiology of host plants through the function of specific genes encoded in their genome. AM fungi also modulate morphological adaptations and various physiological processes in host plants, that help to mitigate drought-induced injury and enhance drought tolerance. Several AM-specific host genes have been identified and reported to be responsible for conferring enhanced drought tolerance. This review provides an overview of the effect of drought stress on the diversity and activity of AM fungi, the symbiotic relationship that exists between AM fungi and host plants under drought stress conditions, elucidates the morphological, physiological, and molecular mechanisms underlying AM fungi-mediated enhanced drought tolerance in plants, and provides an outlook for future research.

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Influence of arbuscular mycorrhiza fungi and drought stress on fatty acids profile of sesame (Sesamum indicum L.)

Cited by 29 publications

References 31 publications

Effect of Phytoplasma Associated with Sesame Phyllody on Ultrastructural Modification, Physio-Biochemical Traits, Productivity and Oil Quality

Effect of Phytoplasma Associated with Sesame Phyllody on Ultrastructural Modification, Physio-Biochemical Traits, Productivity and Oil Quality

Microbial seed coating: an attractive tool for sustainable agriculture

Elucidating the Mechanisms Underlying Enhanced Drought Tolerance in Plants Mediated by Arbuscular Mycorrhizal Fungi

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