Pathway Pollen Grains Mitochondria

#Pathway #Pollen Grains #Mitochondria #Energy Metabolism #TCA #ETC Proteins #Redox Cofactors #ATP #Pollen Germination #Gene Expression #RNA-seq Data #OXPHOS #RNA Metabolism #Protein Synthesis #Mitochondrial ADP/ATP Carrier #Aconitase #Acetyl CoA Synthetase #Adenine Nucleotide Transporter #Adrenodoxin #Adrenodoxin Reductase #Aldehyde Dehydrogenase #Alternative Oxidase #ATP/Phosphate Carrier #Buthionine Sulfoximine-Insensitive Roots #Complex I #Complex II #Complex III #Complex IV #Caseinolytic Protease #CoA Carrier #Citrate Synthase #D-2-Hydroxyglutarate #D-2-Hydroxyglutarate Dehydrogenase #Elongated Mitochondria #FTSH Protease #Fumarase #Glucose-6-Phosphate #Glycine Decarboxylase Complex H #Glutamate Dehydrogenase #L-Galactono-1,4-Lactone Dehydrogenase #Glycine Decarboxylase P-Protein #Glutathione Peroxidase #Glutamine-Rich Protein #Gyrase A #Heat-Shock Protein #Hexokinase #Isocitrate Dehydrogenase #Mitochondrial Calcium Uptake #Malate Dehydrogenase #Mitochondrial Calcium Uptake Protein #MIRO-Related GTPase #Multiple Organellar RNA Editing Factor #Mitochondrial Pyruvate Carrier #Mitochondrial Transcription Termination Factor #NAD-Dependent Malic Enzyme #Alternative NAD(P)H Dehydrogenase #NAD(P)H Dehydrogenase #NAD+Transporter #Embryo Defective #Oxoglutarate Dehydrogenase #Cytochrome P450 #Pyruvate Dehydrogenase #Pyruvate Dehydrogenase Kinase #Peroxisomal and Mitochondrial Division Factor #Pentatricopeptide Repeat #Pre-Sequence Protease #RNA-Binding Glycine-Rich Protein #Ribosomal Pentatricopeptide Repeat #Succinyl-CoA Synthetase #Succinate Dehydrogenase #Succinic Semialdehyde #Succinic Semialdehyde Dehydrogenase #Single-Stranded DNA-Binding Protein #SWI/SNF Protein Complex B Protein #Translocase of the Inner Membrane #Translocase of the Outer Membrane #Uncoupling Protein #Voltage-Dependent Anion Channel #WHIRLY

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DOI: 10.1016/j.cub.2024.12.037

DOI

In mature pollen grains, mitochondria accumulate Ca2+and CoA transporters to feed energy metabolism pathways. TCA and ETC proteins globally accumulate in mature pollen, enhancing the production of redox cofactors and ATP. The ATP produced is then used for pollen germination. On the other hand, proteins belonging to transcriptional, post-transcriptional, translational, and post-translational machineries (named gene expression) strongly decreased in mature pollen. Those machineries could almost be arrested, as most of the proteins present in buds are not detected in pollen. RNA-seq data for TCA, OXPHOS, RNA metabolism, and protein synthesis during pollen development were obtained from Klodova et al.19and are shown inFigure S13. In blue: proteins more accumulated in buds. In black: proteins evenly accumulated. In red: proteins more accumulated in pollen grains. Dashed arrows: import. In gray: unclear function in plants. All data found inData S4. AAC, mitochondrial ADP/ATP carrier; ACO, aconitase; ACS, acetyl CoA synthetase; ADNT, adenine nucleotide transporter; ADX, adrenodoxin; ADXR, adrenodoxin reductase; ALDH2B7, aldehyde dehydrogenase 2B7; AOX1b, alternative oxidase 1b; APC, ATP/phosphate carrier; BIR6, buthionine sulfoximine-insensitive roots 6; CI, complex I; CII, complex II; CIII, complex III; CIV, complex IV; CLPP2, caseinolytic protease 2; COAC1, CoA carrier 1; CS, citrate synthase; D-2-HG, d-2-hydroxyglutarate; D2HGDH, D-2-hydroxyglutarate dehydrogenase; ELM1, elongated mitochondria 1; FTSH3, FTSH protease 3; FUM, fumarase; G-6-P, glucose-6-phosphate; GDCH, glycine decarboxylase complex H; GDH, glutamate dehydrogenase; GLDH, L-galactono-1,4-lactone dehydrogenase; GLDP, glycine decarboxylase P-protein; GPX, glutathione peroxidase; GRP23, glutamine-rich protein 23; GYRA, gyrase A; HSP60, heat-shock protein 60; HXK, hexokinase; IDH, isocitrate dehydrogenase; MCU, mitochondrial calcium uptake; MDH, malate dehydrogenase; MICU, mitochondrial calcium uptake protein; MIRO1, MIRO-related GTPase 1; MORF, multiple organellar RNA editing factor; MPC1, mitochondrial pyruvate carrier 1; mTERF, mitochondrial transcription termination factor; NAD-ME, NAD-dependent malic enzyme; NDA, alternative NAD(P)H dehydrogenase A; NDB, NAD(P)H dehydrogenase B; NDT2, NAD+transporter 2; NUWA, alias embryo defective 1,796; OGDH, oxoglutarate dehydrogenase; P450, cytochrome P450; PDH, pyruvate dehydrogenase; PDK, pyruvate dehydrogenase kinase; PMD, peroxisomal and mitochondrial division factor; PPR, pentatricopeptide repeat; PREP, pre-sequence protease; RBGA, RNA-binding glycine-rich protein A; RPPR, ribosomal pentatricopeptide repeat; SCS, succinyl-CoA synthetase; SDH, succinate dehydrogenase; SSA, succinic semialdehyde; SSADH, succinic semialdehyde dehydrogenase; SSB, single-stranded DNA-binding protein; SWIB, swi/snf protein complex B protein; TIM, translocase of the inner membrane; TOM, translocase of the outer membrane; UCP, uncoupling protein; VDAC2, voltage-dependent anion channel 2; WHY2, WHIRLY 2. See alsoData S5.

DOI

10.1016/j.cub.2024.12.037

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