Article
Biochemistry & Molecular Biology
Zhipan Yang, Mingxin Liu, Shunhua Ding, Yi Zhang, Huixia Yang, Xiaogang Wen, Wei Chi, Congming Lu, Qingtao Lu
Summary: Plastid-encoded RNA polymerase (PEP)-dependent transcription is crucial for chloroplast development and plant growth. PD1 has been identified as a novel regulator for PEP-dependent gene expression and chloroplast development in Arabidopsis. PD1 interacts with PEP core subunit beta and is essential for the accumulation of PEP-beta, impacting chloroplast development in Arabidopsis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Deok Hyun Seo, Jinwoo Jang, Dongryeol Park, Youngdae Yoon, Yang Do Choi, Geupil Jang
Summary: PEP-ASSOCIATED PROTEIN 3 (OsPAP3) is found to regulate chloroplast biogenesis in rice by controlling the transcription of chloroplast genes. Overexpression of OsPAP3 in rice improves tiller formation and grain yield by promoting chloroplast development.
Article
Plant Sciences
Fariba Shahmir, K. Peter Pauls
Summary: The different forms of BnMicEmUP gene are significantly upregulated in embryogenic microspores of Brassica napus, indicating that these proteins are likely transcription factors localized in chloroplasts and overexpression leads to increased sensitivity of plant seedlings to exogenous hormone abscisic acid.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Cell Biology
Pedro Robles, Victor Quesada
Summary: Current chloroplast and mitochondrial genomes contain only a small number of genes involved in essential functions, with the majority of proteins being encoded by nuclear genes and imported into these organelles. mTERF proteins play a crucial role in regulating gene expression, impacting plant development and stress responses. Recent research has shed light on the molecular mechanisms by which mTERFs control the expression of chloroplast and mitochondrial genomes.
Article
Biochemistry & Molecular Biology
Kexing Xin, Ting Pan, Shan Gao, Shunping Yan
Summary: The study revealed that the transcription factor NAC102 in Arabidopsis localizes in both chloroplasts and the nucleus, and interacts with chloroplast RNA polymerases, functioning as a repressor in chloroplasts. This discovery indicates that transcription factors are new regulators of chloroplast gene expression and can also operate in chloroplasts, besides the nucleus.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Roberto Espinoza-Corral, Peter K. Lundquist
Summary: Loss-of-function mutants in ABC1 genes are associated with respiratory defects in microbes and humans as well as compromised photosynthetic performance and stress tolerance in plants. We investigated AtABC1K6, a homolog from Arabidopsis thaliana, and demonstrated its in vitro autophosphorylation activity. The presence of kinase activity has significant implications for further studies on ABC1 proteins and plastoglobules.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2022)
Article
Plant Sciences
Yanxin Du, Weiping Mo, Tingting Ma, Weijiang Tang, Lijin Tian, Rongcheng Lin
Summary: This study revealed that a mutation in the DUA1 gene in rice led to deficient chloroplast development, impaired chlorophyll biosynthesis, and reduced expression of PEP-dependent genes under low-temperature and low-light conditions. Additionally, the interaction between DUA1 and OsSIG1 was shown to play a crucial role in regulating chloroplast gene expression and modulating chloroplast development in response to environmental signals.
PHOTOSYNTHESIS RESEARCH
(2021)
Article
Cell Biology
Kwanuk Lee, Dario Leister, Tatjana Kleine
Summary: Chloroplast-localized mTERF2 plays a crucial role in plant development, with its complete loss of function leading to embryo lethality and its reduction affecting plant development and chlorophyll content. Additionally, mTERF2 is required for the splicing of group IIB introns of ycf3 and rps12, highlighting its importance in regulating gene expression in chloroplasts.
Review
Biochemistry & Molecular Biology
Yi Zhang, Lin Tian, Congming Lu
Summary: Chloroplasts evolved from a cyanobacterial endosymbiont and have their own independent genome with unique features. Light activates chloroplast gene expression to optimize photosynthesis, minimize photodamage, and allocate energy. Recent research has shifted from describing chloroplast gene expression to exploring the underlying mechanisms.
PLANT COMMUNICATIONS
(2023)
Article
Plant Sciences
Zhenlu Zhang, Xiuxiu Zhao, Zhengqun Zhang, Xiaoqin Huang, Lixia Zhang, Ping Sun
Summary: Cellulose accumulation in the new shoots of tea plants negatively affects the tenderness of the leaves, especially in the secondary cell walls. The study also showed the importance of cellulose synthase enzymes in this process.
PHYSIOLOGIA PLANTARUM
(2021)
Article
Multidisciplinary Sciences
Youra Hwang, Soeun Han, Chan Yul Yoo, Liu Hong, Chenjiang You, Brandon H. Le, Hui Shi, Shangwei Zhong, Ute Hoecker, Xuemei Chen, Meng Chen
Summary: Light activates plastid photosynthesis genes by inhibiting PIFs and generating a nucleus-to-plastid signal. Four sigma factors act as anterograde signals to activate plastid photosynthesis genes.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Essam Darwish, Ritesh Ghosh, Abraham Ontiveros-Cisneros, Huy Cuong Tran, Marcus Petersson, Liesbeth De Milde, Martyna Broda, Alain Goossens, Alex Van Moerkercke, Kasim Khan, Olivier Van Aken
Summary: Plants respond to mechanical stimuli by regulating their growth and defense mechanisms. This study identifies the molecular mechanisms of touch signaling and reveals that Piezo ion channels do not play a major role in touch-induced gene expression and thigmomorphogenesis. Instead, the receptor-like kinase Feronia acts as a strong negative regulator of the touch signaling pathway dependent on jasmonic acid. Furthermore, the calmodulin-binding transcriptional activators CAMTA1/2/3 are key regulators of the touch signaling pathway independent of jasmonic acid.
Article
Multidisciplinary Sciences
Junyan Hong, Chathura Gunasekara, Cheng He, Sanzhen Liu, Jianqin Huang, Hairong Wei
Summary: Identification of pathway-specific regulators in Arabidopsis thaliana and Populus trichocarpa was done using TGMI and SPLS methods, with TGMI showing greater efficiency. However, the two methods are somewhat complementary in identifying different pathway regulators.
SCIENTIFIC REPORTS
(2021)
Article
Plant Sciences
Antonela L. Alem, Federico D. Ariel, Yuhan Cho, Jong Chan Hong, Daniel H. Gonzalez, Ivana L. Viola
Summary: GLK1 is a key transcriptional regulator of photomorphogenesis, and, together with TCP15, it regulates the light-induced cotyledon opening and expression of related genes in plants. TCP15 forms a complex with GLK1 to coordinate the expression of cell expansion genes and genes involved in the development of the photosynthetic apparatus.
Article
Plant Sciences
Ying Wang, Meng Tang, Ying Zhang, Mengling Huang, Lan Wei, Yang Lin, Jiatao Xie, Jiasen Cheng, Yanping Fu, Daohong Jiang, Bo Li, Xiao Yu
Summary: This study reveals a mechanism of a trihelix transcription factor complex in regulating immune gene expression and disease resistance in plants. The complex consists of ASR3 and AITF1, which interact with each other and activate specific genes to modulate immune responses.