Mechanism of low‐temperature‐induced pollen failure in rice

Mamun, Ezaz Al; Cantrill, Laurence C.; Overall, Robyn L.; Sutton, B. G.

doi:10.1042/cbi20090417

Cited by 14 publications

(13 citation statements)

References 46 publications

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“…Phylogenetically, the wheat SUT gene TaSUT1 within a monocot cluster is closely related to the rice SUT gene OsSUT5 (Sauer, 2007). However, the expression pattern of TaSUT1 in the wheat anther is still not clear, but OsSUT5 is strongly expressed in the tapetum layer and the young microspores (Nguyen et al, 2010). The qRT‐PCR assays illustrate that the expression levels of the SUT gene TaSUT1 were not affected significantly at the meiosis and VM stages and were repressed significantly at the YM stage in the CIMS line (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…3D). Similarly, lack of starch accumulation is a common performance of pollen sterility induced by abiotic stress, ABA application, or cytoplasmic male sterility (Khan et al, 2013;Mamun et al, 2010;Oliver et al, 2007). Thus, treating the CHA on the wheat could affect later-period anther development, especially the decrease of starch accumulation in the pollen grains.…”

Section: Discussionmentioning

confidence: 99%

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Carbohydrate Metabolism and Gene Regulation during Anther Development Disturbed by Chemical Hybridizing Agent in Wheat

Zhu

Zhang

et al. 2015

Crop Science

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Induction of male sterility by chemical‐hybridizing agents is important in heterosis breeding, especially for self‐pollinated crops like wheat (Triticum aestivum L.). This study was designed to investigate the association of carbohydrate metabolism with chemical‐induced male sterility (CIMS) in wheat anthers. Transverse section observation showed that during the young microspore (YM) stage, the tapetum of fertile line anthers began to degenerate, while the CIMS line tapetum showed delayed degradation. The levels of nonreducing sugars in the CIMS line anthers always remained higher than in the fertile line, and the starch content of the CIMS line anthers was approximately 45% of those from the fertile line. Compared with the fertile line, the activities of cell wall bound invertase (CWIN) and vacuolar invertase (VIN) were significantly reduced. Quantitative real‐time polymerase chain reaction (qRT‐PCR) analyses showed that the expression levels of one CWIN gene (IVR1) and one VIN gene (IVR5) were significantly downregulated at the YM stage and the vacuolate microspore (VM) stage, and one sucrose transporter gene (TaSUT1) expression was decreased at the YM stage in CIMS anther. The results of the present work imply that sugar transport disruption is a possible crucial cause for CIMS.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Carbohydrate Metabolism and Gene Regulation during Anther Development Disturbed by Chemical Hybridizing Agent in Wheat

Zhu

Zhang

et al. 2015

Crop Science

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“…This has also been observed by Mamun et al . () where plasmolysis of tetrad cells and microspores has been noted in chilled rice plants.…”

Section: Discussionmentioning

confidence: 99%

Chilling to zero degrees disrupts pollen formation but not meiotic microtubule arrays in Triticum aestivum L.

Barton

Cantrill

Law

et al. 2014

Plant Cell & Environment

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Throughout the wheat-growing regions of Australia, chilling temperatures below 2 °C occur periodically on consecutive nights during the period of floral development in spring wheat (Triticum aestivum L.). In this study, wheat plants showed significant reductions in fertility when exposed to prolonged chilling temperatures in controlled environment experiments. Among the cultivars tested, the Australian cultivars Kite and Hartog had among the lowest levels of seed set due to chilling and their responses were investigated further. The developmental stage at exposure, the chilling temperature and length of exposure all influenced the level of sterility. The early period of booting, and specifically the +4 cm auricle distance class, was the most sensitive and corresponded to meiosis within the anthers. The response of microtubules to chilling during meiosis in Hartog was monitored, but there was little difference between chilled and control plants. Other abnormalities, such as plasmolysis and cytomixis increased in frequency, were associated with death of developing pollen cells, and could contribute to loss of fertility. The potential for an above-zero chilling sensitivity in Australian spring wheat varieties could have implications for exploring the tolerance of wheat flower development to chilling and freezing conditions in the field.

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“…Additionally, pollen tubes as tip-growing cells are essential part of sexual reproduction in higher plants [3]. According to previous reports, exposure to cold acclimation significantly reduces the pollen germination rate [4] and alters the cellular organization in rice [5]. More interestingly, Camellia pollen germinated at low temperature (even at 3°C) on an artificial agar medium, while lily pollen did not germinate at low temperature [6].…”

Section: Introductionmentioning

confidence: 90%

Nitric Oxide Participates in Cold-Inhibited Camellia sinensis Pollen Germination and Tube Growth Partly via cGMP In Vitro

Wang

Zhuge

et al. 2012

PLoS ONE

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Nitric oxide (NO) plays essential roles in many biotic and abiotic stresses in plant development procedures, including pollen tube growth. Here, effects of NO on cold stress inhibited pollen germination and tube growth in Camellia sinensis were investigated in vitro. The NO production, NO synthase (NOS)-like activity, cGMP content and proline (Pro) accumulation upon treatment with NO scavenger cPTIO, NOS inhibitor L-NNA, NO donor DEA NONOate, guanylate cyclase (GC) inhibitor ODQ or phosphodiesterase (PDE) inhibitor Viagra at 25°C (control) or 4°C were analyzed. Exposure to 4°C for 2 h reduced pollen germination and tube growth along with increase of NOS-like activity, NO production and cGMP content in pollen tubes. DEA NONOate treatment inhibited pollen germination and tube growth in a dose-dependent manner under control and reinforced the inhibition under cold stress, during which NO production and cGMP content promoted in pollen tubes. L-NNA and cPTIO markedly reduced the generation of NO induced by cold or NO donor along with partly reverse of cold- or NO donor-inhibited pollen germination and tube growth. Furthermore, ODQ reduced the cGMP content under cold stress and NO donor treatment in pollen tubes. Meanwhile, ODQ disrupted the reinforcement of NO donor on the inhibition of pollen germination and tube growth under cold condition. Additionally, Pro accumulation of pollen tubes was reduced by ODQ compared with that receiving NO donor under cold or control condition. Effects of cPTIO and L-NNA in improving cold-treated pollen germination and pollen tube growth could be lowered by Viagra. Moreover, the inhibitory effects of cPTIO and L-NNA on Pro accumulation were partly reversed by Viagra. These data suggest that NO production from NOS-like enzyme reaction decreased the cold-responsive pollen germination, inhibited tube growth and reduced Pro accumulation, partly via cGMP signaling pathway in C. sinensis.

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Mechanism of low‐temperature‐induced pollen failure in rice

Cited by 14 publications

References 46 publications

Carbohydrate Metabolism and Gene Regulation during Anther Development Disturbed by Chemical Hybridizing Agent in Wheat

Carbohydrate Metabolism and Gene Regulation during Anther Development Disturbed by Chemical Hybridizing Agent in Wheat

Chilling to zero degrees disrupts pollen formation but not meiotic microtubule arrays in Triticum aestivum L.

Nitric Oxide Participates in Cold-Inhibited Camellia sinensis Pollen Germination and Tube Growth Partly via cGMP In Vitro

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