Castor (Ricinus communis L.) Rc-LOX5 plays important role in wilt resistance

Mhaske, Somnath D.; Mahatma, M. K.; Jha, Sanjay Kumar; Singh, Pushpendra; Mahatma, Lalit; Parekh, Vipulkumar; Ahmad, Taslim

doi:10.1016/j.indcrop.2012.11.035

Cited by 15 publications

(4 citation statements)

References 14 publications

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“…Here one candidate gene coding for lipase/lipoxygenase (PLAT/LH2 family protein) was identified co-localized with QTL Fru-DTI. This gene has been described as a mediator of the interaction with lipids or membrane bound proteins [ 74 ]. In Arabidopsis, lipase/lipoxygenase is a downstream target of the ABA signaling pathway and acts as a positive regulator of drought stress tolerance [ 75 ].…”

Section: Discussionmentioning

confidence: 99%

Genomic regions associated with physiological, biochemical and yield-related responses under water deficit in diploid potato at the tuber initiation stage revealed by GWAS

et al. 2021

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Water deficit, which is increasing with climate change, is a serious threat to agricultural sustainability worldwide. Dissection of the genetic architecture of water deficit responses is highly desirable for developing water-deficit tolerant potato cultivars and enhancing the resilience of existing cultivars. This study examined genetic variation in response to water deficit in a panel of diploid potato and identified the QTL governing this trait via a genome-wide association study (GWAS). A panel of 104 diploid potato accessions were evaluated under both well-watered and water deficit treatments at tuber initiation stage. Drought stress index (DTI) was calculated to assess tolerance of the diploid potato genotypes to water deficit. The GWAS was conducted using a matrix of 47K single nucleotide polymorphisms (SNP), recently available for this population. We are reporting 38 QTL, seven for well-watered conditions, twenty-two for water deficit conditions and nine for DTI which explain between 12.6% and 44.1% of the phenotypic variance. A set of 6 QTL were found to be associated with more than one variable. Marker WDP-9.21 was found associated with tuber fresh weigh under WD and gene annotation analysis revealed co-localization with the Glucan/water dikinase (GWD) gene. Of the nine QTL detected from DTI on chromosomes 2,3,5,8,10 and 12, three candidate genes with a feasible role in water deficit response were identified. The findings of this study can be used in marker-assisted selection (MAS) for water- deficit tolerance breeding in potato.

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Section: Discussionmentioning

confidence: 99%

Genomic regions associated with physiological, biochemical and yield-related responses under water deficit in diploid potato at the tuber initiation stage revealed by GWAS

et al. 2021

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“…It contains a PLAT/LH2 domain, which is thought to mediate interaction with lipids or membrane-bound proteins (Bateman and Sandford, 1999 ). Proteins containing the PLAT/LH2 domain are typically stress-induced (Bona et al, 2007 ; Mhaske et al, 2013 ). The presence of the PLAT domain has led to the annotation of this protein as a lipase or lipoxygenase, however, PLAFP lacks the catalytic site, suggesting a different function.…”

Section: Introductionmentioning

confidence: 99%

Phloem Proteomics Reveals New Lipid-Binding Proteins with a Putative Role in Lipid-Mediated Signaling

et al. 2016

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Global climate changes inversely affect our ability to grow the food required for an increasing world population. To combat future crop loss due to abiotic stress, we need to understand the signals responsible for changes in plant development and the resulting adaptations, especially the signaling molecules traveling long-distance through the plant phloem. Using a proteomics approach, we had identified several putative lipid-binding proteins in the phloem exudates. Simultaneously, we identified several complex lipids as well as jasmonates. These findings prompted us to propose that phloem (phospho-) lipids could act as long-distance developmental signals in response to abiotic stress, and that they are released, sensed, and moved by phloem lipid-binding proteins (Benning et al., 2012). Indeed, the proteins we identified include lipases that could release a signaling lipid into the phloem, putative receptor components, and proteins that could mediate lipid-movement. To test this possible protein-based lipid-signaling pathway, three of the proteins, which could potentially act in a relay, are characterized here: (I) a putative GDSL-motif lipase (II) a PIG-P-like protein, with a possible receptor-like function; (III) and PLAFP (phloem lipid-associated family protein), a predicted lipid-binding protein of unknown function. Here we show that all three proteins bind lipids, in particular phosphatidic acid (PtdOH), which is known to participate in intracellular stress signaling. Genes encoding these proteins are expressed in the vasculature, a prerequisite for phloem transport. Cellular localization studies show that the proteins are not retained in the endoplasmic reticulum but surround the cell in a spotted pattern that has been previously observed with receptors and plasmodesmatal proteins. Abiotic signals that induce the production of PtdOH also regulate the expression of GDSL-lipase and PLAFP, albeit in opposite patterns. Our findings suggest that while all three proteins are indeed lipid-binding and act in the vasculature possibly in a function related to long-distance signaling, the three proteins do not act in the same but rather in distinct pathways. It also points toward PLAFP as a prime candidate to investigate long-distance lipid signaling in the plant drought response.

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“…Completion of the castor bean genome sequence now permits genome-wide analysis of the LOX gene family in castor as well as with LOX in Arabidopsis. Mhaske et al, in [23] identified "12 candidate LOX genes in the castor bean genome. Phylogenetic analysis indicated that these LOX members cluster into two groups, designated types 1 and 2, as expected from previous studies.…”

Section: Jasmonic Acidmentioning

confidence: 99%

Green Molecules in Plant Health Management

Vaniya,

Mahatma

2023

JEAI

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Green molecules, includes salicylic acid, jasmonic acid, saponins, chitosan, etc offers many promising avenues for plant health management. They offer a natural and sustainable approach for crop protection, with a lower environmental impact than synthetic pesticides and fertilizers. Furthermore, green molecules can enhance plant growth; improve abiotic stress tolerance such as drought, salinity, and heavy metal toxicity, improving crop performance under adverse environmental conditions which ultimately result in better yield. Green molecules have been shown to be effective against a range of plant pathogens, including bacteria, fungi and viruses. In the future, the use of green molecules in plant health management is likely to continue to grow. As consumers increasingly demand sustainable and environmentally friendly products, the demand for green molecules in agriculture is likely to increase. Furthermore, as research into the mechanisms of action of green molecules continues, new and more effective green molecules are likely to be developed, further expanding their potential applications in plant health management. Nevertheless, there are also some challenges associated with the use of green molecules in the field. For example, the effectiveness of green molecules can vary depending on environmental conditions, such as temperature and humidity. Furthermore, the use of green molecules can require higher application rates and more frequent applications than synthetic pesticides, which can increase costs and labor requirements.

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Castor (Ricinus communis L.) Rc-LOX5 plays important role in wilt resistance

Cited by 15 publications

References 14 publications

Genomic regions associated with physiological, biochemical and yield-related responses under water deficit in diploid potato at the tuber initiation stage revealed by GWAS

Genomic regions associated with physiological, biochemical and yield-related responses under water deficit in diploid potato at the tuber initiation stage revealed by GWAS

Phloem Proteomics Reveals New Lipid-Binding Proteins with a Putative Role in Lipid-Mediated Signaling

Green Molecules in Plant Health Management

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