Enhanced biosynthesis of quercetin occurs as A photoprotective measure in Lycopersicon esculentum mill. under Acute UV-B exposure

Shourie, Abhilasha; Tomar, Pushpa C.; Srivastava, Divya; Chauhan, Rahul

doi:10.1590/s1516-8913201401678

Cited by 8 publications

(5 citation statements)

References 47 publications

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“…This specific quercetin probably provides specific quercetin provides the first protection against radiation for C. purpurascens leaves in spring, since the leaves at this location in spring contain the lowest quantity of anthocyanins, compared to leaves from other locations. A 60-min exposure to UV-B radiation is enough to activate intensive quercetin synthesis (Shourie et al, 2014). Our results from location Kamen zid confirm this characteristic of quercetins.…”

Section: Discussionsupporting

confidence: 77%

Physiological Response of Local Populations of Species Cyclamen Purpurascens Mill. To Forest Gaps

Ravnjak¹

2019

Appl. Ecol. Env. Res.

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Aspect of forest dynamics is also the formation of forest gaps. Certain plant species typical for understory, still persists in newly formed forest gaps. For such species, environmental conditions change significantly. In research the physiological response of local populations of Cyclamen purpurascens Mill. in forest gaps, depending on time of their formation was examined. The physiological response was measured as anthocyanin and quercetin content in cyclamen leaves, depending on forest gap and season. It was found that anthocyanin content in leaves from all gaps was statistically higher in autumn than in spring. A comparison of anthocyanin content between leaves from different gaps has shown that leaves from the youngest gap in the spring contained a statistically lowest quantity of anthocyanin malvidin 3-rutinoside, malvidin 3-glucoside, and peonidin 3-Oneoheseridoside. There were no differences between other locations. For quercetins, it was found that leaves from the youngest gap in the spring contained the highest amount of myricetin-3-rhamnoside. Conclusion is that cyclamen leaves on the youngest gap have not yet completely adapted to increased solar radiation. Quercetins represent first and immediate response to increased UV-B radiation. Leaves on youngest gap in the spring do not yet have sufficient anthocyanin to protect them against radiation.

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Section: Discussionsupporting

confidence: 77%

Physiological Response of Local Populations of Species Cyclamen Purpurascens Mill. To Forest Gaps

Ravnjak¹

2019

Appl. Ecol. Env. Res.

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“…Of particular note is the up regulation of genes governing the synthesis of quercitin in E. cladocalyx . Quercitin is a strong antioxidant compound [50] that is antagonistic to the functions of the auxin class of phytohormone [12]. Inhibiting the role of auxin may lead to broad changes in resource allocation to the scale of plant growth habit.…”

Section: Discussionmentioning

confidence: 99%

Medium term water deficit elicits distinct transcriptome responses in Eucalyptus species of contrasting environmental origin

Spokevicius

Tibbits

Rigault³

et al. 2017

BMC Genomics

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BackgroundClimatic and edaphic conditions over geological timescales have generated enormous diversity of adaptive traits and high speciation within the genus Eucalyptus (L. Hér.). Eucalypt species occur from high rainfall to semi-arid zones and from the tropics to latitudes as high as 43°S. Despite several morphological and metabolomic characterizations, little is known regarding gene expression differences that underpin differences in tolerance to environmental change. Using species of contrasting taxonomy, morphology and physiology (E. globulus and E. cladocalyx), this study combines physiological characterizations with ‘second-generation’ sequencing to identify key genes involved in eucalypt responses to medium-term water limitation.ResultsOne hundred twenty Million high-quality HiSeq reads were created from 14 tissue samples in plants that had been successfully subjected to a water deficit treatment or a well-watered control. Alignment to the E. grandis genome saw 23,623 genes of which 468 exhibited differential expression (FDR < 0.01) in one or both ecotypes in response to the treatment. Further analysis identified 80 genes that demonstrated a significant species-specific response of which 74 were linked to the ‘dry’ species E. cladocalyx where 23 of these genes were uncharacterised. The majority (approximately 80%) of these differentially expressed genes, were expressed in stem tissue. Key genes that differentiated species responses were linked to photoprotection/redox balance, phytohormone/signalling, primary photosynthesis/cellular metabolism and secondary metabolism based on plant metabolic pathway network analysis.ConclusionThese results highlight a more definitive response to water deficit by a ‘dry’ climate eucalypt, particularly in stem tissue, identifying key pathways and associated genes that are responsible for the differences between ‘wet’ and ‘dry’ climate eucalypts. This knowledge provides the opportunity to further investigate and understand the mechanisms and genetic variation linked to this important environmental response that will assist with genomic efforts in managing native populations as well as in tree improvement programs under future climate scenarios.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-017-3664-z) contains supplementary material, which is available to authorized users.

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“…Climate change has lead to several perturbations in the environment such as extremes of heat and cold, drought, waterlogging, and changing weather patterns, which are responsible for adverse effects on crop production globally. Various environmental and anthropogenic factors pose abiotic stress on plants such as temperature, salinity, drought, heavy metals ( Sandrini et al, 2022 ), UV radiation ( Shourie et al, 2014 ), and pesticides ( Yasmin and D’Souza, 2010 ). Temperature fluctuations, erratic rainfall and frequent droughts are also attributed to shifts in agricultural cycles.…”

Section: Introductionmentioning

confidence: 99%

Phyto-microbiome to mitigate abiotic stress in crop plants

et al. 2023

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Plant-associated microbes include taxonomically diverse communities of bacteria, archaebacteria, fungi, and viruses, which establish integral ecological relationships with the host plant and constitute the phyto-microbiome. The phyto-microbiome not only contributes in normal growth and development of plants but also plays a vital role in the maintenance of plant homeostasis during abiotic stress conditions. Owing to its immense metabolic potential, the phyto-microbiome provides the host plant with the capability to mitigate the abiotic stress through various mechanisms like production of antioxidants, plant growth hormones, bioactive compounds, detoxification of harmful chemicals and toxins, sequestration of reactive oxygen species and other free radicals. A deeper understanding of the structure and functions of the phyto-microbiome and the complex mechanisms of phyto-microbiome mediated abiotic stress mitigation would enable its utilization for abiotic stress alleviation of crop plants and development of stress-resistant crops. This review aims at exploring the potential of phyto-microbiome to alleviate drought, heat, salinity and heavy metal stress in crop plants and finding sustainable solutions to enhance the agricultural productivity. The mechanistic insights into the role of phytomicrobiome in imparting abiotic stress tolerance to plants have been summarized, that would be helpful in the development of novel bioinoculants. The high-throughput modern approaches involving candidate gene identification and target gene modification such as genomics, metagenomics, transcriptomics, metabolomics, and phyto-microbiome based genetic engineering have been discussed in wake of the ever-increasing demand of climate resilient crop plants.

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Enhanced biosynthesis of quercetin occurs as A photoprotective measure in Lycopersicon esculentum mill. under Acute UV-B exposure

Abstract: Lycopersicon esculentum respond to UV-B by enhanced synthesis of flavonoid quercetin, a strong antioxidant that

Cited by 8 publications

References 47 publications

Physiological Response of Local Populations of Species Cyclamen Purpurascens Mill. To Forest Gaps

Physiological Response of Local Populations of Species Cyclamen Purpurascens Mill. To Forest Gaps

Medium term water deficit elicits distinct transcriptome responses in Eucalyptus species of contrasting environmental origin

Phyto-microbiome to mitigate abiotic stress in crop plants

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