SLP1 and SLP2: Ancient Chloroplast and Mitochondrial Protein Phosphatases

Identifying genomic regions associated with C4 photosynthetic activity and leaf anatomy in Alloteropsis semialata

“…ω = 0.83 for ASEM_AUS1_34303 ). The annotated genes in the LB‐01 region have a variety of functions (Table S4), including loci associated with the regulation of the Calvin cycle ( SLP1 ( ASEM_AUS1_34302 ) (Kutuzov & Andreeva, 2012; Johnson et al ., 2020)) and the activation of NADP‐malic enzyme 2 (NADP‐ME2), a C 4 decarboxylation enzyme ( RPM1‐Induced Protein Kinase , RIPK ( ASEM_AUS1_34305 ) (Wu et al ., 2022)).…”

“…However, based on the annotations of the genes in the associated regions, we did identify candidate genes with functions potentially associated with the d 13 C, the most promising of which include those co-expressed with Rubisco (SLP1 (ASEM_AUS1_34302)), the activation of the NADP-ME C 4 decarboxylating enzyme (RIPK (ASE-M_AUS1_34305)), the development of C 4 'Kranz' anatomy (SCL9 (ASEM_AUS1_29467)), and the suppression of nonphotochemical quenching (SOQ1 (ASEM_AUS1_14480)). SLP1 encodes a Shewanella-like protein phosphatase 1, an ancient chloroplast phosphatase that is generally more highly expressed in photosynthetic tissue (Kutuzov & Andreeva, 2012;Johnson et al, 2020). In Arabidopsis thaliana, it is co-expressed with a number of photosynthetic genes (including all of the Calvin cycle enzymes and Rubisco activase) and it is predicted to play a role in the light-dependent regulation of chloroplast function (Kutuzov & Andreeva, 2012).…”

Pseudophosphorylation of Arabidopsis jasmonate biosynthesis enzyme lipoxygenase 2 via mutation of Ser600 inhibits enzyme activity

“…These enzymes are key elements for understanding the stress-regulation of jasmonate synthesis but have not been currently characterized. However, the availability of data concerning chloroplastic protein kinases, protein phosphatases, and their targets is steadily increasing ( 66 , 67 , 68 , 69 , 70 , 71 ). Such data should facilitate the search for the relevant protein modifiers.…”

Identifying leaf anatomy and metabolic regulators that underpin C4photosynthesis inAlloteropsis semialata

“…However, based on the annotations of the genes in the associated regions, we did identify candidate genes with functions potentially associated with the δ 13 C, the most promising of which include SLP1 encodes a Shewanella-like protein phosphatase 1, an ancient chloroplast phosphatase (Johnson et al, 2020) that is generally more highly expressed in photosynthetic tissue (Kutuzov and Andreeva, 2012). In Arabidopsis thaliana, it is co-expressed with a number of photosynthetic genes (including all of the Calvin cycle enzymes and Rubisco activase) and it is predicted to play a role in the light-dependent regulation of chloroplast function (Kutuzov and Andreeva, 2012).…”

“…However, based on the annotations of the genes in the associated regions, we did identify candidate genes with functions potentially associated with the δ 13 C, the most promising of which include SLP1 encodes a Shewanella-like protein phosphatase 1, an ancient chloroplast phosphatase (Johnson et al, 2020) that is generally more highly expressed in photosynthetic tissue (Kutuzov and . CC-BY 4.0 International license made available under a (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity.…”