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Characterization and QTL identification in eggplant introgression lines under two N fertilization levels

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Horticultural Plant Journal 2023年第5期9卷 971-985页

作者： Elena Rosa-Martínez Gloria Villanueva Ahmet Sahin Pietro Gramazio María Dolores García-Martínez María Dolores Raig on Santiago Vilanova Jaime Prohens Mariola Plazas instituto de Conservacion y Mejora de la Agrodiversidad Valenciana Universitat Politecnica de ValenciaCamino de Vera 1446022 ValenciaSpain instituto de biología molecular y celular de plantas Consejo Superior de Investigaciones Científicas-Universitat Politecnica de ValenciaCamino de Vera 1446022 ValenciaSpain

Lowering nitrogen inputs is a major goal for sustainable *** the present study,a set of 10 Solanum melongena introgression lines(ILs)developed using Solanum incanum as the exotic donor parent were grown under two nitrogen fertilization doses supplied with the irrigation system:1)8.25 mmol·L-1NH4NO3,corresponding to the high nitrogen treatment(HN),and 2)no external nitrogen supply,corresponding to the low nitrogen treatment(LN).Twenty traits,including plant growth and yield parameters,fruit size and morphology,nitrogen and carbon content in leaf and fruit,and phenolics content in fruit,were *** aim was to select of potential materials for eggplant breeding under low N inputs,as well as to identify and locate putative QTLs associated with the traits *** significant differences were observed between the soil characteristics of the HN and LN treatments,except for nitrogen and iron content,which was slightly lower in the HN,probably as a consequence of higher nutrient removal from soil by plants in the latter *** of variance showed that lowering nitrogen inputs did not significantly affect the final yield,fruit morphology,size and phenolics *** agronomic traits were highly and positively correlated with each other under both treatments,as well as total phenolics with chlorogenic acid *** assessment of the differences between each IL and the recipient parent resulted in the identification of 36 QTLs associated with most of the traits—12 were specific to the HN,17 specific to the LN,and 7 were stable across *** introgressed fragment of *** generally had a negative effect on the trait,except for QTLs for fruit dry matter,for fruit length on chromosome 10 under the HN,and for fruit pedicel length on chromosome 9 under the *** increase over AN-S-26 of the allele of *** for the QTLs detected ranged between-73.98% and 26.03% in HN and-73.67%and 34.43% in *** findings provide useful tools fo

关键词： Solanum melongena Solanum incanum Wild relatives N fertilization Abiotic stress QTL

Abscisic Acid Catabolism Generates Phaseic Acid, a Molecule Able to Activate a Subset of ABA Receptors

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molecular Plant 2016年第11期9卷 1448-1450页

作者： Pedro L. Rodriguez instituto de Biotogia molecular y celular de plantas Consejo Superior de Investigaciones Cientificas-Universidad Politecnica de Valencia 46022 Valencia Spain

Abscisic acid （ABA） catabolic pathways are conventionally thought of as routes for ABA inactivation and, thus, reduction of the well-known ABA responses to cope with stress. However, this point of view was challenged by the finding that some forms of hydroxylated ABA generated by ABA catabolism still maintain biological activity （Zou et al., 1995; Kepka et al., 2011）.

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Gibberellin signaling turns blue

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molecular Plant 2021年第8期14卷 1226-1228页

作者： Noel Blanco-Tourinan David Alabadi Plant Vascular development Group ETH Zurich8092 ZurichSwitzerland instituto de biologia molecular y celular de plantas(CSIC-UPV) 46022 ValenciaSpain

The effect of envir on mental light on plant growth is mediated,at least in part,by the hormones gibberellins(GAs).The current model is that light signaling affects the GA pathway by transcrip-tional regulation of GA metabolism genes and by degradation of the negative regulators deLLA proteins by *** new studies provide evidenee showing that the blue light photoreceptor CRy1 directly regulates GA signaling.

关键词： CRy1 Gibberellin photoreceptor

Linking plant metabolism and immunity through methionine biosynthesis

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molecular Plant 2022年第1期15卷 6-8页

作者： Francisco Escaray Amelia Felipo-Benavent Pablo Vera instituto de biología molecular y celular de plantas Universidad Politécnica de Valencia-C.S.I.CCiudad Politécnica de la InnovaciónEdificio 8EIngeniero Fausto Elios/n46022 ValenciaSpain

Plants respond to pathogenic cues with a transcriptional reprog-ramming that leads to de novo production of defense-related pro-teins and a huge variety of secondary metabolites(e.g.,phyto-alexins,phenolics,etc.).Activation of these host defenses,which contribute to halt the intruder as part of the resistance,im-plies an increased demand for metabolic energy and carbon skel-etons derived from primary metabolism(Bolton,2009).

关键词： metabolism immunity Bolton

The combination of a microbial and a non-microbial biostimulant increases yield in lettuce(Lactuca sativa) under salt stress conditions by up-regulating cytokinin biosynthesis

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Journal of Integrative Plant biology 2024年第10期66卷 2140-2157页

作者： Patricia Benito Marina Celdrán Javier Bellón Vicente Arbona Miguel González-Guzmán Rosa Porcel Lynne yenush José M.Mulet instituto de biología molecular y celular de plantas(IBMCP) Universitat Politècnica de València-Consejo Superior de Investigaciones CientíficasValencia 46022Spain Caldic Ibérica S.L.Barcelona 08210Spain department of biología Bioquímica y Ciencias NaturalesUniversitat Jaume ICampus Riu SecE-Castellón 12071Spain

Salinization poses a significant challenge in agriculture, exacerbated by anthropogenic global warming. Biostimulants, derived from living microorganisms or natural extracts, have emerged as valuable tools for conventional and organic ***, our understanding of the molecular mechanisms underlying the effects of biostimulants is very limited, especially in crops under real cultivation conditions. In this study, we adopted an integrative approach to investigate the effectiveness of the combined application of plant growth-promoting bacterium(Bacillus megaterium strain BM08) and a non-microbial biostimulant under control conditions(normal watering) and salt stress. After confirming the yield increase under both conditions, we investigated the molecular mechanisms underlying the observed effect by measuring a number of physiological parameters(i.e., lipid peroxidation, antioxidants,chlorophylls, total phenolics and phytohormone content), as well as RNA sequencing and primary metabolite analyses. Our findings reveal that the combined effect of the microbial and non-microbial biostimulants led to a decrease in the antioxidant response and an up-regulation of genes involved in cytokinin biosynthesis under salt stress ***, in turn, resulted in a higher concentration of the bioactive cytokinin, isopentenyladenosine, in roots and leaves and an increase in γ-aminobutyric acid, a non-proteic amino acid related to abiotic stress responses. In addition, we observed a decrease in malic acid, along with an abscisic acid(ABA)-independent up-regulation of SR-kinases, a family of protein kinases associated with abiotic stress responses. Furthermore, we observed that the single application of the non-microbial biostimulant triggers an ABA-dependent response under salt stress;however, when combined with the microbial biostimulant, it potentiated the mechanisms triggered by the BM08 bacterial strain. This comprehensive investigation shows that the combination o

关键词： abscisic acid biostimulants cytokinins isopentenyl adenosine lettuce salt stress

A Direct Link between Abscisic Acid Sensing and the Chromatin-Remodeling ATPase BRAHMA via Core ABA Signaling Pathway ComDonents

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molecular Plant 2016年第1期9卷 136-147页

作者： Marta Peirats-Llobet Soon-Ki Han Miguel Gonzalez-Guzman Cheol Woong Jeong Lesia Rodriguez Borja Belda-Palazon Doris Wagner Pedro L. Rodriguez instituto de biologia molecular y celular de plantas Consejo Superior de Investigaciones Cientfficas-Universidad Politecnica de Valencia 46022 Valencia Spain department of biology University of Pennsylvania Philadelphia PA 19104 USA These authors contributed equally to this article

Optimal response to drought is critical for plant survival and will affect biodiversity and crop performance during climate change. Mitotically heritable epigenetic or dynamic chromatin state changes have been implicated in the plant response to the drought stress hormone abscisic acid （ABA）. The Arabidopsis SWI/SNF chromatin-remodeling ATPase BRAHMA （BRM） modulates response to ABA by preventing pre- mature activation of stress response pathways during germination. We show that core ABA signaling pathway components physically interact with BRM and post-translationally modify BRM by phosphoryla- tion/dephosphorylation. Genetic evidence suggests that BRM acts downstream of SnRK2.2/2.3 kinases, and biochemical studies identified phosphorylation sites in the C-terminal region of BRM at SnRK2 target sites that are evolutionarUy conserved. Finally, the phosphomimetic BRMs17s^D S1762D mutant displays ABA hypersensitivity. Prior studies showed that BRM resides at target loci in the ABA pathway in the presence and absence of the stimulus, but is only active in the absence of ABA. Our data suggest that SnRK2- dependent phosphorylation of BRM leads to its inhibition, and PP2CA-mediated dephosphorylation of BRM restores the ability of BRM to repress ABA response. These findings point to the presence of a rapid phosphorylation-based switch to control BRM activity; this property could be potentially harnessed to improve drought tolerance in plants.

关键词： abscisic acid hormone signaling chromatin remodeling

Folate Metabolism Interferes with Plant Immunity through 1C Methionine Synthase-Directed Genome-wide DNA Methylation Enhancement

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molecular Plant 2019年第9期12卷 1227-1242页

作者： Beatriz Gonzalez Pablo Vera instituto de biologia molecular y celular de plantas Universidad Politecnica de Valencia-C.S.I.CCiudad Politecnica de la InnovacionEdificio 8EIngeniero Fausto Elios/n.46022 ValenciaSpain

Plants rely on primary metabolism for flexible adaptation to environmental ***,through a combination of chemical genetics and forward genetic studies in Arabidopsis plants,we identified that the essential folate metabolic pathway exerts a salicylic acid-independent negative control on plant *** of the folate pathway promotes enhanced resistance to Pseudom onas syringae DC3000 via activation of a primed immune state in plants,whereas its implementation results in enhanced *** proteomics analysis using immune-defective mutants identified a methionine synthase(METS1),in charge of the synthesis of Met through the folate-dependent 1C metabolism,acting as a nexus between the folate pathway and plant *** of METS1 represses plant immunity and is accompanied by genome-wide global increase in DNA methylation,revealing that imposing a methylation pressure at the genomic level compromises plant *** together,these results indicate that the folate pathway represents a new layer of complexity in the regulation of plant defense responses.

关键词： folate pathway plant immunity methionine DNA methylation

Plant triterpenoid saponins function as susceptibility factors to promote the pathogenicity of Botrytis cinerea

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molecular Plant 2024年第7期17卷 1073-1089页

作者： Francisco J.Escaray Amelia Felipo-Benavent Cristian J.Antonelli Begona Balaguer Maria Pilar Lopez-Gresa Pablo Vera instituto de biologia molecular y celular de plantas Universidad Politecnica de Valencia-C.S.l.CCiudad Politecnica de la InnovacionEdificio 8Eacceso GIngeniero Fausto Elios/n46022ValenciaSpain

The gray mold fungus Botrytis cinerea is a necrotrophic pathogen that causes diseases in hundreds of plant species,including high-value *** polyxenous nature and pathogenic success are due to its ability to perceive host signals in its *** this study,we found that laticifer cells of Euphorbia lathyris are a source of susceptibility factors required by *** to cause ***,poor-in-latex(pil)mutants,which lack laticifer cells,show full resistance to this pathogen,whereas lot-of-latex mutants,which produce more laticifer cells,are *** S factors are triterpenoid saponins,which are widely distributed natural products of vast structural *** downregulation of laticifer-specific oxydosqualene cyclase genes,which encode the first committed step enzymes for triterpene and,therefore,saponin biosynthesis,conferred disease resistance to ***,the Medicago truncatula Iha-1 mutant,compromised in triterpenoid saponin biosynthesis,showed enhanced ***,the application of different purified triterpenoid saponins pharmacologically complemented the diseaseresistant phenotype ofpil and hla-1 mutants and enhanced disease susceptibility in different plant *** found that triterpenoid saponins function as plant cues that signal transcriptional reprogramming in ***,leading to a change in its growth habit and infection strategy,culminating in the abundant formation of infection cushions,the multicellular appressoria apparatus dedicated to plant penetration and biomass destruction in *** together,these results provide an explanation for how plant triterpenoid saponins function as disease susceptibility factors to promote *** pathogenicity.

关键词： Euphorbia lathyris laticifer cell latex appressorium infection cushion necrotrophic fungi

Structure of Ligand-Bound Intermediates of Crop ABA Receptors Highlights PP2C as Necessary ABA Co-receptor

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molecular Plant 2017年第9期10卷 1250-1253页

作者： María Moreno-Alvero Cristina yunta Miguel Gonzalez-Guzman Jorge Lozano-Juste Juan Luis Benavente Vicent Arbona Margarita Menéndez Martin Martinez-Ripoll Lourdes Infantes Aurelio Gomez-Cadenas Pedro L. Rodriguez Armando Albert instituto de Química Física Rocasolano Consejo Superior de Investigaciones Científicas 28006 Madrid Spain instituto de biología molecular y celular de plantas Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia 46022 Valencia Spain Biotecnologia Departament Ciències Agràries i del Medi Natural Universitat Jaume I 12071 Castelló de la Plana Spain

dear Editor Abscisic acid （ABA） is the main phytohormone involved in adaptive crop responses to drought. ABA signaling relies on the family of pyrabactin resistance 1/PyRl-like/regulatory components of ABA receptors （PyR/PyL/RCAR）, which upon ABA binding form high-affinity ternary complexes with clade A protein phosphatases type 2C （PP2Cs） and inhibit them （Cutler et al., 2010）. This results in the activation of an SnRK2-dependent phosphorylation cascade affecting a high number of targets in the plant cells, regulating stomatal aper- ture and the expression of stress-responsive genes （Cutler et al., 2010）.

关键词： Structure of Ligand-Bound Intermediates Crop ABA Receptors Highlights PP2C