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Details on Person Anther and pollen development is a complex and important pro...
| Class:Id | Summation:8986663 |
|---|---|
| _displayName | Anther and pollen development is a complex and important pro... |
| _timestamp | 2017-11-15 23:04:35 |
| created | [InstanceEdit:8986734] Gupta, Parul, 2017-04-28 |
| modified | [InstanceEdit:9029302] Gupta, Parul, 2017-11-15 |
| text | Anther and pollen development is a complex and important process that leads to the release of viable pollen and plant fertilization. This process includes the genes regulating anther cell division and differentiation, meiosis, pollen development and anther dehiscence. Regulatory pathways from rice and Arabidopsis were demonstrated by the characterization of male sterile mutants from orthologous genes in both species. MADS box transcription factors (MADS3, MADS58) are important for floral initiation via stamen and carpel specification (Yamaguchi et al., 2006). MSP1 (MULTIPLE SPOROCYTE1) plays a critical role for normal anther cell differentiation especially controlling early sporogenic development (Wang et al., 2006). OsTDL1A, a TPD1 -like gene, has been proved to bind the leucine-rich-repeat domain of MSP1 to limit sporocyte numbers (Zhao et al., 2008). Undeveloped Tapetum1 (Udt1) is necessary for the differentiation and development of tapetal cells (Jung et al., 2005). TDR (tapetum degeneration retardation) is a positive regulator of tapetal programmed cell death (PCD) (Li et al., 2006). Cysteine protease (OsCP1) and a protease inhibitor (OsC6) are direct targets of OsTDR (Li et al., 2006) and involved in the process of tapetal PCD induction. GAMYB is a transcription factor controlling rice pollen development. Loss-of-function of OsGAMYB causes loss of α-amylase expression in the endosperm in response to the treatment of GA, and the mutant microspores could not stick to the tapetal cells from the tetrad stage (kaneko et al., 2004; Tsuji et al., 2006). RAFTIN is mainly expressed in tapetal cells and accumulates in Ubisch bodies. Knock down of OsRAFTIN1 produced abnormal microspore exine development, leading to male sterility (Wang et al., 2003). DEX1 (Defective in Exine formation 1) is essential for the early stages of exine formation and sporopollenin secretion (Yu et al., 2016). DPW (DEFECTIVE POLLEN WALL) restores exine formation in the ms2 mutant, therefore, play important role in conservation of sporopollenin synthesis (Shi et al., 2011). |
| (summation) | [Pathway:8986768] Anther and pollen development [Oryza sativa] |
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