Effects of High Temperature on the Development of Pollen Mother Cells and Microspores in Barley Hordeum vulgare L.

Sakata, Tadashi; Takahashi, Hideyuki; Nishiyama, Iwao; Higashitani, Akihiro

doi:10.1007/pl00013947

Cited by 116 publications

(115 citation statements)

References 16 publications

Supporting

Mentioning

110

Contrasting

Order By: Relevance

“…This stage of development is just before development of tapetum, middle layer, and endothecial cells from the parietal cells (4,5). In plants exposed to HT for <3 days, no morphological abnormalities were observed, and after a temperature downshift, male fertility was recovered (3,4). On the other hand, when 5-mm-long panicles were examined after HT treatment for 3 days, anther parietal and epidermal cells significantly decreased auxin levels, showing 52.9% intensity of fluorescent signals per area in each anther locule compared with levels of control plant ( Fig.…”

Section: Resultsmentioning

confidence: 98%

“…Lobell and Field (2) have reported that, at least in the cases of wheat, maize, and barley, there is clearly a negative correlation between worldwide crop yields and increased temperatures, and for these crops, recent warming has resulted in an annual combined loss of ≈40 megatons or $5 billion. Previously, we used double-rowed barley to show that increasing temperatures principally influence the early phase of anther development, causing premature progression through meiosis of pollen mother cells and proliferation arrest and premature degradation of anther wall cells (3)(4)(5). Complete male sterility can result from elevated temperatures for 4 days or longer when they occur during the early phase of anther development, because pollen grains abort (3,4).…”

mentioning

confidence: 99%

“…Previously, we used double-rowed barley to show that increasing temperatures principally influence the early phase of anther development, causing premature progression through meiosis of pollen mother cells and proliferation arrest and premature degradation of anther wall cells (3)(4)(5). Complete male sterility can result from elevated temperatures for 4 days or longer when they occur during the early phase of anther development, because pollen grains abort (3,4). Several morphological abnormalities can arise during HT injury, including mitochondrial swelling and vacuolization, and comprehensive alterations to transcription in anther wall cells (5).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Auxins reverse plant male sterility caused by high temperatures

Sakata

Oshino

Miura

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

299

266

View full text Add to dashboard Cite

With global warming, plant high temperature injury is becoming an increasingly serious problem. In wheat, barley, and various other commercially important crops, the early phase of anther development is especially susceptible to high temperatures. Activation of auxin biosynthesis with increased temperatures has been reported in certain plant tissues. In contrast, we here found that under high temperature conditions, endogenous auxin levels specifically decreased in the developing anthers of barley and Arabidopsis . In addition, expression of the YUCCA auxin biosynthesis genes was repressed by increasing temperatures. Application of auxin completely reversed male sterility in both plant species. These findings suggest that tissue-specific auxin reduction is the primary cause of high temperature injury, which leads to the abortion of pollen development. Thus, the application of auxin may help sustain steady yields of crops despite future climate change.

show abstract

Section: Resultsmentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Auxins reverse plant male sterility caused by high temperatures

Sakata

Oshino

Miura

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

299

266

View full text Add to dashboard Cite

show abstract

“…Sakata and Higashitani reported that heat stress arrested the function of secondary parietal cells of the pollen walls. 20) Therefore, the middle layer and tapetum of pollen walls do not develop well, which may cause the pollen to burst under heat stress conditions. Our study indicated that EBR and DHECD increased the percentage of viable pollen under heat stress conditions and improved pollen properties.…”

Section: Discussionmentioning

confidence: 99%

Effects of a brassinosteroid and an ecdysone analogue on pollen germination of rice under heat stress

et al. 2013

View full text Add to dashboard Cite

Heat stress is associated with a reduction in pollen germination and seed setting of rice. Brassinosteroids have been reported to counteract some stresses on plant growth and development. We investigated the effects of an exogenously applied brassinosteroid, (24-epibrassinolide; EBR) and an ecdysone analogue (7,8-dihydro-8α-20-hydroxyecdysone; DHECD) against heat stress on pollen viability of rice (Oryza sativa L.) cv. Pathum Thani 1. The plants were treated with either EBR or DHECD and exposed to a day/night heat stress regime of 40/30°C for 7 days. The results demonstrated that 0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting. Furthermore, these chemical treatments conferred resistance to heat stress in in vivo pollen germination and seed setting. Consequently, these results suggest EBR and DHECD should alleviate the detrimental effects of heat stress by improving pollen germination and seed setting and enable rice to withstand high temperature stress.

show abstract

“…During the early stages of reproductive development the effect of heat was mainly on grain number. When heat-stressed at meiosis, most pollen grains were found to lack starch, causing high levels of sterility in barley (Sakata et al 2000;Abiko et al 2005). In rice, exposure to heat during the fertilisation process prevents anther dehiscence and reduces pollen shedding and germination (Matsui and Omasa 2002;Prasad et al 2006).…”

Section: Heat Stressmentioning

confidence: 99%

Yield stability for cereals in a changing climate

Powell

Ravash

et al. 2012

Functional Plant Biol.

127

View full text Add to dashboard Cite

Abstract. The United Nations Food and Agriculture Organisation (FAO) forecasts a 34% increase in the world population by 2050. As a consequence, the productivity of important staple crops such as cereals needs to be boosted by an estimated 43%. This growth in cereal productivity will need to occur in a world with a changing climate, where more frequent weather extremes will impact on grain productivity. Improving cereal productivity will, therefore, not only be a matter of increasing yield potential of current germplasm, but also of improving yield stability through enhanced tolerance to abiotic stresses. Successful reproductive development in cereals is essential for grain productivity and environmental constraints (drought, cold, frost, heat and waterlogging) that are associated with climate change are likely to have severe effects on yield stability of cereal crops. Currently, genetic gains conferring improved abiotic stress tolerance in cereals is hampered by the lack of reliable screening methods, availability of suitable germplasm and poor knowledge about the physiological and molecular underpinnings of abiotic stress tolerance traits.

show abstract

Effects of High Temperature on the Development of Pollen Mother Cells and Microspores in Barley Hordeum vulgare L.

Cited by 116 publications

References 16 publications

Auxins reverse plant male sterility caused by high temperatures

Auxins reverse plant male sterility caused by high temperatures

Effects of a brassinosteroid and an ecdysone analogue on pollen germination of rice under heat stress

Yield stability for cereals in a changing climate

Contact Info

Product

Resources

About