Examining ozone effects on the tropical C4 crop Sorghum bicolor.

IF 2.3 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES
PeerJ Pub Date : 2025-01-20 eCollection Date: 2025-01-01 DOI:10.7717/peerj.18844
Mst Nahid Farha, Flossie Brown, Lucas A Cernusak, Stephen Sitch, Alexander W Cheesman
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引用次数: 0

Abstract

Ozone (O3), a major air pollutant, can negatively impact plant growth and yield. While O3 impacts have been widely documented in crops such as wheat and soybean, few studies have looked at the effects of O3 on sorghum, a C4 plant and the fifth most important cereal crop worldwide. We exposed grain sorghum (Sorghum bicolor cv. HAT150843) to a range of O3 concentrations (daytime mean O3 concentrations ranged between 20 and 97 ppb) in open-top chambers, and examined how whole plant and leaf morphological traits varied in response to O3 exposure. Results showed no significant impact of realistic O3 exposure on whole plant biomass and its partitioning in sorghum. These findings suggest that sorghum is generally resistant to O3 and should be considered as a favourable crop in O3 polluted regions, while acknowledging further research is needed to understand the mechanistic basis of O3 tolerance in sorghum.

臭氧对热带C4作物高粱双色的影响。
臭氧(O3)是一种主要的空气污染物,会对植物生长和产量产生负面影响。虽然O3对小麦和大豆等作物的影响已经被广泛记录,但很少有研究关注O3对高粱的影响,高粱是一种C4植物,也是世界上第五大谷类作物。我们将高粱(sorghum bicolor cv。HAT150843)到一定范围的臭氧浓度(白天平均臭氧浓度在20到97 ppb之间),并研究了整个植物和叶片形态特征在臭氧暴露下的变化。结果表明,实际O3暴露对高粱全株生物量及其分配无显著影响。这些结果表明,高粱对O3具有普遍抗性,应被视为O3污染地区的有利作物,但需要进一步研究以了解高粱耐受O3的机制基础。
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来源期刊
PeerJ
PeerJ MULTIDISCIPLINARY SCIENCES-
CiteScore
4.70
自引率
3.70%
发文量
1665
审稿时长
10 weeks
期刊介绍: PeerJ is an open access peer-reviewed scientific journal covering research in the biological and medical sciences. At PeerJ, authors take out a lifetime publication plan (for as little as $99) which allows them to publish articles in the journal for free, forever. PeerJ has 5 Nobel Prize Winners on the Board; they have won several industry and media awards; and they are widely recognized as being one of the most interesting recent developments in academic publishing.
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