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Phenotyping floral attractiveness to pollinators using volatilomics,3D imaging,and insect monitoring

Molecular Plant 2024年第8期17卷 1164-1166页

作者： Filip Slavkovic adnane boualem Catherine Dogimont Abdelhafid Bendahmane Institute of Plant Sciences Paris-Saclay(IPS2) INRAECNRSUniversity of Paris-SaclayUniversity of EvryUniversity of Paris CiteBatiment 63091192 GifsurYvetteFrance INRAE UR 1052Unite de Génetique et d'Amelioration des Fruits et LegumesBP94.84143Montfavet.France

PLANTS,POLLINATORS,AND BIODIVERSITY:THESTATUSQUO Plant-pollinator coevolution has played a crucial role in shaping the biodiversity of ecosystems that we know ***,plants and pollinators are key to agriculture,contributing to the production of most fruits and vegetables necessary for healthy human ***,over the last decades,there is mounting evidence of pollinator decline all over the world,which constitutes a major threat to food security(European Commission,2020).To pollinators,nectar and pollen are the main rewards:pollen is essentially their only source of proteins,lipids,and vitamins,while nectar is a carbohydrate-rich solution that they use to fuel somatic functions(Ollerton,2021).However,nectar is much more than just a sweet solution:it comprises a plethora of secondary metabolites and volatiles of major importance for plant-pollinator ***,by neglecting these traits and reducing genetic diversity,plant breeding has potentially increased the risk of losing the traits beneficial to pollinators.

关键词： breeding mount vitamin

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Sclareol and linalyl acetate are produced by glandular trichomes through the MEP pathway

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Horticulture Research 2021年第1期8卷 2949-2961页

作者： Camille Chalvin Stephanie Drevensek Françoise Gilard Caroline Mauve Christel Chollet Halima Morin Edith Nicol Eva Heripre Lucie Kriegshauser Bertrand Gakiere Michel Dron Abdelhafid Bendahmane adnane boualem Universite Paris-Saclay CNRSINRAEUniv EvryInstitute of Plant Sciences Paris-Saclay(IPS2)91405 OrsayFrance Molecular Chemistry Laboratory(LCM) UMR 9168CNRSEcole PolytechniqueInstitut Polytechnique de ParisRoute de Saclay91128 Palaiseau CedexFrance Laboratory of Mechanics of Soils Structures and Materials(MSSMAT)UMR 8579CNRSEcole CentraleSupelecUniversite Paris-SaclayBâtiment Eiffel8-10 rue Joliot-Curie91190 Gif-Sur-YvetteFrance

Sclareol,an antifungal specialized metabolite produced by clary sage,Salvia sclarea,is the starting plant natural molecule used for the hemisynthesis of the perfume ingredient *** is mainly produced in clary sage flower calyces;however,the cellular localization of the sclareol biosynthesis remains *** elucidate the site of sclareol biosynthesis,we analyzed its spatial distribution in the clary sage calyx epidermis using laser desorption/ionization mass spectrometry imaging(LDI–FTICR-MSI)and investigated the expression profile of sclareol biosynthesis genes in isolated glandular trichomes(GTs).We showed that sclareol specifically accumulates in GTs’gland cells in which sclareol biosynthesis genes are strongly *** next isolated a glabrous beardless mutant and demonstrate that more than 90%of the sclareol is produced by the large capitate *** experiments,using 1-13 C-glucose,and specific enzyme inhibitors further revealed that the methylerythritol-phosphate(MEP)biosynthetic pathway is the main source of isopentenyl diphosphate(IPP)precursor used for the biosynthesis of *** findings demonstrate that sclareol is an MEP-derived diterpene produced by large capitate GTs in clary sage emphasing the role of GTs as biofactories dedicated to the production of specialized metabolites.

关键词： oxide. starting synthesis

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The miR166-SIHB15A regulatory module controls ovule development and parthenocarpic fruit set under adverse temperatures in tomato

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Molecular Plant 2021年第7期14卷 1185-1198页

作者： Christian Clepet Ravi Sureshbhai Devani Rachid Boumlik Yanwei Hao Halima Morin Fabien Marcel Marion Verdenaud Brahim Mania Gwilherm Brisou Sylvie Citerne Gregory Mouille Jean-Christophe Lepeltier Shai Koussevitzky adnane boualem Abdelhafid Bendahmane Institute of Plant Sciences Paris-Saclay INRAECNRSUniversite Paris-SaclayOrsay 91405France HM Clause Mas Saint-PierreQuartier La GalineSaint-Remy de Provence 13210France Hazera Seeds Ltd Berurim M.P.Shikmim 7983700Israel lnstitut Jean-Pierre Bourgin INRAEVersaillesFrance Present address:Key Laboratory of Horticultural Crop Biology and Germplasm Innovation in South China College of HorticultureSouth China Agricultural UniversityGuangzhou 510642China

Fruit set is inhibited by adverse temperatures,with consequences on *** isolated a tomato mutant producing fruits under non-permissive hot temperatures and identified the causal gene as SIHB15A,belonging to classⅢhomeodomain leucine-zipper transcription ***15A,loss-of-function mu-tants display aberrant ovule development that mimics transcriptional changes occurring in fertilized ovules and leads to parthenocarpic fruit set under optimal and non-permissive temperatures,in field and greenhouse *** cold growing conditions,SIHB15A is subjected to conditional haploinsufficiency and recessive dosage sensitivity controlled by microRNA 166(miR166).Knockdown of SIHB15A alleles by miR166 leads to a continuum of aberrant ovules correlating with parthenocarpic fruit *** with this,plants harboring an Slhb15a-miRNA166-resisiant allele developed normal ovules and were unable to set parthenocarpic fruit under cold *** affinity purification sequencing and RNA-sequencing analyses revealed that SIHB15A is a bifunctional transcription factor expressed in the ovule ***15A binds to the promoters of auxin-related genes to repress auxin signaling and to the promoters of ethylene-related genes to activate their expression.A survey of tomato genetic biodiversity identified pat and pat-1,two historical parthenocarpic mutants,as alleles of *** together,our findings demonstrate the role of SIHB15A as a sentinel to prevent fruit set in the absence of fertilization and provide a mean to enhance fruiting under extreme temperatures.

关键词： parthenocarpy dosage sensitivity HD-Ziplll miRNA166 heat stress cold stress

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