The ATP-binding cassette (ABC) transporter OsABCG3 is essential for pollen development in rice

Chang, Zhenyi; Jin, Mingna; Wang, Yan; Chen, Hui; Qiu, Shijun; Fu, Shan; Xia, Jixing; Liu, Yuchen; Chen, Zhufeng; Wu, Jianxin; Tang, Xiaoyan

doi:10.1186/s12284-018-0248-8

Cited by 51 publications

(34 citation statements)

References 75 publications

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“…OsABCC1 is one of the ATP-binding cassette (ABC) transporters. ABC transporter proteins play roles in the translocation of a broad range of substances within membranes using energy from ATP hydrolysis [70]. Song et al [66] stated that OsABCC1 plays a vital role in the detoxification and decreasing As in rice grains.…”

Section: Phytotoxicity Of Arsenic and Arsenic Detoxification Mechanismentioning

confidence: 99%

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Abedi

Mojiri

2020

Plants

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Rice consumption is a source of arsenic (As) exposure, which poses serious health risks. In this study, the accumulation of As in rice was studied. Research shows that As accumulation in rice in Taiwan and Bangladesh is higher than that in other countries. In addition, the critical factors influencing the uptake of As into rice crops are defined. Furthermore, determining the feasibility of using effective ways to reduce the accumulation of As in rice was studied. AsV and AsIII are transported to the root through phosphate transporters and nodulin 26-like intrinsic channels. The silicic acid transporter may have a vital role in the entry of methylated As, dimethylarsinic acid (DMA) and monomethylarsonic acid (MMA), into the root. Amongst As species, DMA(V) is particularly mobile in plants and can easily transfer from root to shoot. The OsPTR7 gene has a key role in moving DMA in the xylem or phloem. Soil properties can affect the uptake of As by plants. An increase in organic matter and in the concentrations of sulphur, iron, and manganese reduces the uptake of As by plants. Amongst the agronomic strategies in diminishing the uptake and accumulation of As in rice, using microalgae and bacteria is the most efficient.

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Section: Phytotoxicity Of Arsenic and Arsenic Detoxification Mechanismentioning

confidence: 99%

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Abedi

Mojiri

2020

Plants

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“…Defective pollen wall ( DPW ) acts as a fatty acyl-carrier protein reductase and DPW2 as a fatty-acid acyltransferase to alter the amounts of cutin and waxes, and of lipidic and phenolic compounds, respectively, during anther development and pollen formation [40,41]. The ATP-binding cassette (ABC) transporters ABCG15 / PDA1 , ABCG26 , and ABCG3 work collaboratively but perform their own functions to transport different materials for anther development and pollen formation [42,43,44,45]. The lipid transfer protein OsC6 is secreted into anther cuticle, anther locule, and the space between the tapetum and middle layer for pollen exine and orbicule formation downstream of TDR and GAMYB [46].…”

Section: Introductionmentioning

confidence: 99%

OsGPAT3 Plays a Critical Role in Anther Wall Programmed Cell Death and Pollen Development in Rice

Sun

Xiang

Yang

et al. 2018

IJMS

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In flowering plants, ideal male reproductive development requires the systematic coordination of various processes, in which timely differentiation and degradation of the anther wall, especially the tapetum, is essential for both pollen formation and anther dehiscence. Here, we show that OsGPAT3, a conserved glycerol-3-phosphate acyltransferase gene, plays a critical role in regulating anther wall degradation and pollen exine formation. The gpat3-2 mutant had defective synthesis of Ubisch bodies, delayed programmed cell death (PCD) of the inner three anther layers, and abnormal degradation of micropores/pollen grains, resulting in failure of pollen maturation and complete male sterility. Complementation and clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated 9 (Cas9) experiments demonstrated that OsGPAT3 is responsible for the male sterility phenotype. Furthermore, the expression level of tapetal PCD-related and nutrient metabolism-related genes changed significantly in the gpat3-2 anthers. Based on these genetic and cytological analyses, OsGPAT3 is proposed to coordinate the differentiation and degradation of the anther wall and pollen grains in addition to regulating lipid biosynthesis. This study provides insights for understanding the function of GPATs in regulating rice male reproductive development, and also lays a theoretical basis for hybrid rice breeding.

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“…In rice, lipid and phenolic metabolism are indispensable for sporopollenin synthesis and pollen wall formation. Genes associated with lipid metabolism include Glycerol-3-Phosphate Acyltransferase3 (GPAT3; Men et al, 2017), CYP704B2 , CYP703A3 (Yang et al, 2014), Defective Pollen Wall (DPW; Shi et al, 2011), Acyl-CoA Synthetase12 (ACOS12; Yang et al, 2017), Oryza sativa ATP Binding Cassette G26 (OsABCG26; Zhao et al, 2015), OsABCG15 (Qin et al, 2013), OsABCG3 (Chang et al, 2018), and OsC6 (Zhang et al, 2010). Loss of function of these genes often leads to defective pollen wall formation, indicating the important role of lipid metabolism on pollen wall formation.…”

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confidence: 99%

PERSISTENT TAPETAL CELL2 Is Required for Normal Tapetal Programmed Cell Death and Pollen Wall Patterning

Uzair

Schreiber

et al. 2019

Plant Physiol.

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The timely programmed cell death (PCD) of the tapetum, the innermost somatic anther cell layer in flowering plants, is critical for pollen development, including the deposition and patterning of the pollen wall. Although several genes involved in tapetal PCD and pollen wall development have been characterized, the underlying regulatory mechanism remains elusive. Here we report that PERSISTENT TAPETAL CELL2 (PTC2), which encodes an AT-hook nuclear localized protein in rice (Oryza sativa), is required for normal tapetal PCD and pollen wall development. The mutant ptc2 showed persistent tapetal cells and abnormal pollen wall patterning including absent nexine, collapsed bacula, and disordered tectum. The defective tapetal PCD phenotype of ptc2 was similar to that of a PCD delayed mutant, ptc1, in rice, while the abnormal pollen wall patterning resembled that of a pollen wall defective mutant, Transposable Element Silencing Via AT-Hook, in Arabidopsis (Arabidopsis thaliana). Levels of anther cutin monomers in ptc2 anthers were significantly reduced, as was expression of a series of lipid biosynthetic genes. PTC2 transcript and protein were shown to be present in the anther after meiosis, consistent with the observed phenotype. Based on these data, we propose a model explaining how PTC2 affects anther and pollen development. The characterization of PTC2 in tapetal PCD and pollen wall patterning expands our understanding of the regulatory network of male reproductive development in rice and will aid future breeding approaches.

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The ATP-binding cassette (ABC) transporter OsABCG3 is essential for pollen development in rice

Cited by 51 publications

References 75 publications

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Arsenic Uptake and Accumulation Mechanisms in Rice Species

OsGPAT3 Plays a Critical Role in Anther Wall Programmed Cell Death and Pollen Development in Rice

PERSISTENT TAPETAL CELL2 Is Required for Normal Tapetal Programmed Cell Death and Pollen Wall Patterning

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