2021
DOI: 10.3389/fpls.2021.559967
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ZmOrphan94 Transcription Factor Downregulates ZmPEPC1 Gene Expression in Maize Bundle Sheath Cells

Abstract: Spatial separation of the photosynthetic reactions is a key feature of C4 metabolism. In most C4 plants, this separation requires compartmentation of photosynthetic enzymes between mesophyll (M) and bundle sheath (BS) cells. The upstream region of the gene encoding the maize PHOSPHOENOLPYRUVATE CARBOXYLASE 1 (ZmPEPC1) has been shown sufficient to drive M-specific ZmPEPC1 gene expression. Although this region has been well characterized, to date, only few trans-factors involved in the ZmPEPC1 gene regulation we… Show more

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Cited by 9 publications
(12 citation statements)
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“…Among them, the best characterized is the PIF families of bHLH TFs that act mainly as negative regulators of photosynthesis gene expression in response to light availability ( Pham et al, 2018 ). SabHLH169(076) was the first bHLH gene cloned in S. aralocaspica, in addition to positively responding to salt, drought and cold stress, we found that the relative expression of SabHLH169(076) was much higher in darkness than in light (any color), especially normal light ( Figure 8 ), which is similar to the results of ZmbHLH80 and ZmbHLH90 identified in maize ( Górska et al, 2019 , 2021 ). ZmbHLH80 and ZmbHLH90 had the same expression profiles with a peak at night or at the beginning of the day and a decline after dawn until the end of the photoperiod.…”
Section: Discussionsupporting
confidence: 83%
“…Among them, the best characterized is the PIF families of bHLH TFs that act mainly as negative regulators of photosynthesis gene expression in response to light availability ( Pham et al, 2018 ). SabHLH169(076) was the first bHLH gene cloned in S. aralocaspica, in addition to positively responding to salt, drought and cold stress, we found that the relative expression of SabHLH169(076) was much higher in darkness than in light (any color), especially normal light ( Figure 8 ), which is similar to the results of ZmbHLH80 and ZmbHLH90 identified in maize ( Górska et al, 2019 , 2021 ). ZmbHLH80 and ZmbHLH90 had the same expression profiles with a peak at night or at the beginning of the day and a decline after dawn until the end of the photoperiod.…”
Section: Discussionsupporting
confidence: 83%
“…Protoplasts were obtained as described in Górska et al . (2021). Rice protoplasts were isolated from rice cell suspension culture or etiolated seedlings.…”
Section: Methodsmentioning
confidence: 99%
“…The ProAcGH3.1 -pHIS2 reporter vector and the AcERF1B/073-pGADT7 effector vector were co-transformed into the yeast strain Y187. The transformed yeast solution was evenly spread on the SD/–Trp and SD/–Trp/–Leu/–His nutrient-deficient media to observe the growth . The primers used are listed in Table S2.…”
Section: Methodsmentioning
confidence: 99%
“…The transformed yeast solution was evenly spread on the SD/−Trp and SD/ −Trp/−Leu/−His nutrient-deficient media to observe the growth. 38 The primers used are listed in Table S2.…”
Section: ■ Materials and Methodsmentioning
confidence: 99%