Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize
Heat stress, a major challenge in modern agriculture due to global warming, significantly reduces crop productivity. To mitigate its adverse effects on maize yield, it is crucial to understand the mechanisms by which heat stress impacts reproductive development. This study investigated the impact of...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-04-01
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| Series: | Crop Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514125000121 |
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| author | Huiqin Wang Jing Sun Hao Ren Bin Zhao Yuting Li Zishan Zhang Baizhao Ren Aziz Khan Jiwang Zhang Yinglong Chen Peng Liu |
| author_facet | Huiqin Wang Jing Sun Hao Ren Bin Zhao Yuting Li Zishan Zhang Baizhao Ren Aziz Khan Jiwang Zhang Yinglong Chen Peng Liu |
| author_sort | Huiqin Wang |
| collection | DOAJ |
| description | Heat stress, a major challenge in modern agriculture due to global warming, significantly reduces crop productivity. To mitigate its adverse effects on maize yield, it is crucial to understand the mechanisms by which heat stress impacts reproductive development. This study investigated the impact of heat stress during the 12th leaf (V12) stage, where silk development begins on grain yield formation, using heat-sensitive and heat-tolerant cultivars. Compared to pollen, silks were found to be more vulnerable to heat stress. Heat stress disrupted hormone balance and inhibited hormone signaling transduction pathways in silks, delaying silk emergence from bracts and reducing fertilization and grain yield. The heat-tolerant cultivar maintained silk growth by activating more response pathways, displaying faster hormone responses, and up-regulating hormones. Taken together, we propose that hormones play an essential role in silk development and later fertilization process. |
| format | Article |
| id | doaj-art-9a8cd9e56dd04052b6027357f067f755 |
| institution | DOAJ |
| issn | 2214-5141 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj-art-9a8cd9e56dd04052b6027357f067f7552025-08-20T03:08:20ZengKeAi Communications Co., Ltd.Crop Journal2214-51412025-04-0113254555510.1016/j.cj.2024.12.019Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maizeHuiqin Wang0Jing Sun1Hao Ren2Bin Zhao3Yuting Li4Zishan Zhang5Baizhao Ren6Aziz Khan7Jiwang Zhang8Yinglong Chen9Peng Liu10College of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Life Sciences, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, ChinaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, China; UWA School of Agriculture and Environment, and UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, AustraliaCollege of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, China; Corresponding author.Heat stress, a major challenge in modern agriculture due to global warming, significantly reduces crop productivity. To mitigate its adverse effects on maize yield, it is crucial to understand the mechanisms by which heat stress impacts reproductive development. This study investigated the impact of heat stress during the 12th leaf (V12) stage, where silk development begins on grain yield formation, using heat-sensitive and heat-tolerant cultivars. Compared to pollen, silks were found to be more vulnerable to heat stress. Heat stress disrupted hormone balance and inhibited hormone signaling transduction pathways in silks, delaying silk emergence from bracts and reducing fertilization and grain yield. The heat-tolerant cultivar maintained silk growth by activating more response pathways, displaying faster hormone responses, and up-regulating hormones. Taken together, we propose that hormones play an essential role in silk development and later fertilization process.http://www.sciencedirect.com/science/article/pii/S2214514125000121Zea mays L.Heat stressTranscriptomicsHormonesSilk |
| spellingShingle | Huiqin Wang Jing Sun Hao Ren Bin Zhao Yuting Li Zishan Zhang Baizhao Ren Aziz Khan Jiwang Zhang Yinglong Chen Peng Liu Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize Crop Journal Zea mays L. Heat stress Transcriptomics Hormones Silk |
| title | Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize |
| title_full | Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize |
| title_fullStr | Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize |
| title_full_unstemmed | Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize |
| title_short | Increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize |
| title_sort | increased hormone activity promotes silk development and heat tolerance during the floret differentiation stage in maize |
| topic | Zea mays L. Heat stress Transcriptomics Hormones Silk |
| url | http://www.sciencedirect.com/science/article/pii/S2214514125000121 |
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