Journal of Experimental Botany最新文献_第4页

Maternal temperature effects on seed dormancy mitigate the negative impact of global warming on germination and population fitness. 母本温度对种子休眠的影响减轻了全球变暖对种子萌发和种群适合度的负面影响。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-04 DOI: 10.1093/jxb/eraf243

Rocío Belén Fernández Farnocchia, Roberto Luis Benech-Arnold, Diego Batlla

{"title":"Maternal temperature effects on seed dormancy mitigate the negative impact of global warming on germination and population fitness.","authors":"Rocío Belén Fernández Farnocchia, Roberto Luis Benech-Arnold, Diego Batlla","doi":"10.1093/jxb/eraf243","DOIUrl":"https://doi.org/10.1093/jxb/eraf243","url":null,"abstract":"A negative relationship is typically observed between maternal temperature and seed dormancy at dispersal. This could affect germination timing in current and future environments given the context of global warming. We conducted field and laboratory experiments to investigate the effects of maternal temperature on the dormancy level of Polygonum aviculare seeds. Data were used to simulate the germination timing and subsequent population reproductive performance under different thermal scenarios. Increasing maternal temperature reduced the dormancy level of seeds, altered the induction of secondary dormancy, and generally increased seedling emergence in the field. Simulations for current thermal scenarios demonstrated that the effect of maternal temperature on seed dormancy could lead to changes in germination timing from year to year. For future warming scenarios, our simulations indicated that rising maternal temperatures, along with those experienced by the seed bank, could decrease the proportion of seeds capable of germinating and delay germination timing, resulting in cascading negative effects on population reproductive fitness. However, changes in the germination timing and the reproductive fitness were more pronounced when the simulations excluded the effects of the maternal temperature on dormancy level, suggesting that this modulation could play a significant role in mitigating the consequences of global warming.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144216032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The short chitooligosaccharide CO4 inhibits chitin-triggered immunity in grapevine and promotes the infection by Botrytis cinerea but not Plasmopara viticola. 短壳寡糖CO4抑制葡萄几丁质免疫，促进葡萄葡萄灰霉病（Botrytis cinerea）的感染，而不促进葡萄浆原菌（Plasmopara viticola）的感染。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-04 DOI: 10.1093/jxb/eraf247

Tania Marzari, Jérémy Villette, Thibault Roudaire, Karine Palavioux, Daphnée Brulé, Agnès Klinguer, Marie-Claire Héloir, Mathieu Gayral, Benoit Poinssot

{"title":"The short chitooligosaccharide CO4 inhibits chitin-triggered immunity in grapevine and promotes the infection by Botrytis cinerea but not Plasmopara viticola.","authors":"Tania Marzari, Jérémy Villette, Thibault Roudaire, Karine Palavioux, Daphnée Brulé, Agnès Klinguer, Marie-Claire Héloir, Mathieu Gayral, Benoit Poinssot","doi":"10.1093/jxb/eraf247","DOIUrl":"https://doi.org/10.1093/jxb/eraf247","url":null,"abstract":"Plants have developed strategies to detect different microorganisms and specifically modulate their immune responses. A primary recognition involves the perception of highly conserved molecular signatures, also known as microbe-associated molecular patterns (MAMPs). Among them, chitin, the main component of the fungal cell wall, is well known to be particularly active in triggering immunity in many plant species, including grapevine. While chitin is a well-known elicitor of plant defenses, other MAMPs such as short chitooligosaccharides (e.g. chitotetraose: CO4) and lipo-chitooligosaccharides (LCOs) have been described to promote symbiotic interactions and inhibit plant immunity in several plant species. Here, we analyzed the molecular signaling triggered by these MAMPs in grapevine focusing on two key immune responses: MAPKs phosphorylation and defense genes expression. Our results revealed that CO4 is the most active MAMP to inhibit some immune responses normally triggered by chitin. In addition, CO4 pre-treatment of grapevine leaves resulted in the repression of immune responses and increased susceptibility to the fungal pathogen Botrytis cinerea while showing no effect on Plasmopara viticola infection. These results suggest that grapevine can regulate its immune signaling pathways differently to either block or promote microbial colonization, depending on the MAMP perceived.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144216035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The IRE1-bZIP60 branch of Unfolded Protein Response is required for Arabidopsis immune response to Botrytis cinerea. 未折叠蛋白反应的IRE1-bZIP60分支是拟南芥对灰葡萄球菌免疫应答所必需的。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-04 DOI: 10.1093/jxb/eraf244

Cécile Blanchard, Sébastien Aimé, Amélie Ducloy, Siham Hichami, Mariannes Azzopardi, Jean-Luc Cacas, Olivier Lamotte

{"title":"The IRE1-bZIP60 branch of Unfolded Protein Response is required for Arabidopsis immune response to Botrytis cinerea.","authors":"Cécile Blanchard, Sébastien Aimé, Amélie Ducloy, Siham Hichami, Mariannes Azzopardi, Jean-Luc Cacas, Olivier Lamotte","doi":"10.1093/jxb/eraf244","DOIUrl":"https://doi.org/10.1093/jxb/eraf244","url":null,"abstract":"The Unfolded Protein Response (UPR) is a signalling pathway activated when endoplasmic reticulum (ER) proteostasis is disturbed. We have investigated the contribution of UPR in Arabidopsis thaliana response to two necrotrophic fungi Botrytis cinerea and Alternaria brassicicola. We found out that the IRE1-bZIP60 branch of UPR was specifically activated upon infection with both pathogenic fungi, as evidenced by the production of the active bZIP60 transcription factor forms and the increased expression of UPR-responsive genes. We also demonstrated using reverse genetics that IRE1-bzIP60 axis was necessary to restrict foliar necrotic symptoms induced by both fungi. Furthermore, mutants deficient for two ER-QC components were also more susceptible to infection by B. cinerea. By contrast, investigating the involvement of CDC48, an AAA+-ATPAse that assist ER-Associated Degradation (ERAD) pathway, we showed that a series of mutants and transgenics are more resistant to B. cinerea. To gain molecular insights into how the ER shapes Arabidopsis immune response to B. cinerea, we quantified defence gene and cell death marker expression in bzip60 single and ire1 double mutants. None of those genes were misregulated in mutant backgrounds, indicating that IRE1-bZIP60 branch of UPR modulates the Arabidopsis response to B. cinerea by a yet-to-be-identified mechanism. Interestingly, we identified NAC053 as a potential actor of this unknown mechanism.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144216034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interplay between membrane system and biomolecular condensates in plant. 植物膜系统与生物分子凝聚物的相互作用。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-04 DOI: 10.1093/jxb/eraf190

Yilin He, Ruixi Li

引用次数: 0

Stigma longevity is not a major limiting factor in hybrid wheat seed production. 柱头寿命不是杂交小麦制种的主要限制因素。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-03 DOI: 10.1093/jxb/eraf154

Marina Millan-Blanquez, James Simmonds, Nicholas Bird, Yann Manes, Cristobal Uauy, Scott A Boden

{"title":"Stigma longevity is not a major limiting factor in hybrid wheat seed production.","authors":"Marina Millan-Blanquez, James Simmonds, Nicholas Bird, Yann Manes, Cristobal Uauy, Scott A Boden","doi":"10.1093/jxb/eraf154","DOIUrl":"https://doi.org/10.1093/jxb/eraf154","url":null,"abstract":"Hybrids offer a promising approach to improve crop performance because the progeny are often superior to their parent lines and they outyield inbred varieties. A major challenge in producing hybrid progeny in wheat, however, lies in the inefficient fertilization of maternal parent ovaries by airborne pollen from male donor lines. This is often attributed to suboptimal synchronisation of male and female flowering as delayed pollination can result in reproductive failure due to female stigma deterioration. To test this accepted dogma, we examined the seed set capacity of six male sterile (MS) cultivars, each varying in the onset of stigma deterioration. To mimic a hybrid seed production scenario, MS cultivars were grown during two consecutive field seasons, and open pollination was allowed up to 15 days after flowering of the female parent using a blend of seven male fertile cultivars with varying flowering times. Detailed analysis of the temporal and spatial distribution of hybrid seed set along the spike across the six MS cultivars showed that seed production remained remarkably stable during the pollination window tested. These findings suggest sustained receptivity of stigma to pollen across all tested MS cultivars throughout the entire time course. We therefore conclude that stigma longevity does not represent a limiting factor in hybrid wheat seed production, and that breeding efforts should prioritise the study of other female traits, such as enhanced access to airborne pollen.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144208618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wild relatives to improve heat tolerance of cultivated quinoa (Chenopodium quinoa Willd.): pollen viability and seed number. 提高栽培藜麦（藜麦野生）耐热性的野生近缘种：花粉活力和种子数量。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-02 DOI: 10.1093/jxb/eraf235

Jiemeng Xu, Hafiz Umar Farooq, Mariam Hashim, Elodie Rey, Ramiro Curti, Angel Morris, Peter J Maughan, Eric N Jellen, David E Jarvis, Daniel Bertero, Vanessa Melino, Mark Tester

{"title":"Wild relatives to improve heat tolerance of cultivated quinoa (Chenopodium quinoa Willd.): pollen viability and seed number.","authors":"Jiemeng Xu, Hafiz Umar Farooq, Mariam Hashim, Elodie Rey, Ramiro Curti, Angel Morris, Peter J Maughan, Eric N Jellen, David E Jarvis, Daniel Bertero, Vanessa Melino, Mark Tester","doi":"10.1093/jxb/eraf235","DOIUrl":"https://doi.org/10.1093/jxb/eraf235","url":null,"abstract":"Quinoa is well-known for high nutritional value and wide adaptability, but it is considered to be heat sensitive. To address that, two tetraploid wild relatives, C. berlandieri and C. hircinum - native to hot environments - were evaluated alongside cultivated quinoa under field conditions with changing planting dates. The C. berlandieri showed the best yield under extreme heat during the last planting (P3), followed by lowland quinoa, C. hircinum, and highland quinoa. The yield advantage of C. berlandieri was achieved by maintaining higher grain number/seed set. Pollen viability was positively correlated with seed set under heat stress in cultivated quinoa, indicating its limiting effects on seed set. Considerable variation was observed for pollen viability among five representative accessions after a five-day 38/33°C (day/night) treatment, with an 80% reduction observed in highland quinoa, whereas C. berlandieri had only a 30% reduction. The most heat-sensitive period for pollen viability was 8 to 10 days before flowering, corresponding to early pollen mother cell stage and it was conserved among different species. Lastly, in vitro pollen germination also demonstrated heat tolerance of C. berlandieri. This research suggests that wild relatives, particularly C. berlandieri, could be crossed with cultivated quinoa to introduce reproductive heat tolerance.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nuclear positioning and cell division site specification in plants. 植物核定位和细胞分裂位点规范。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-06-02 DOI: 10.1093/jxb/eraf241

Olivia S Hazelwood, Jessica M Orr, M Arif Ashraf

引用次数: 0

The Study of Plasmodesmal Biology Using Proximity Labeling Technologies. 利用接近标记技术研究胞浆原丝生物学。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-30 DOI: 10.1093/jxb/eraf239

Zhongpeng Li, Kyaw Aung

引用次数: 0

What can we learn from the ecophysiology of plants inhabiting extreme environments?: from 'sherplants' to 'shercrops'. 我们能从极端环境下植物的生态生理学中学到什么？从“sherplants”到“shercrops”。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-29 DOI: 10.1093/jxb/eraf236

J Flexas, A R Fernie, B Usadel, D Alonso-Forn, V Ardiles, M C Ball, D Ballesteros, L Bravo, T J Brodribb, M Carriquí, F Castanyer-Mallol, L A Cavieres, T Chondol, M J Clemente-Moreno, R E Coopman, L Corcuera, J De Vries, A Diaz-Espejo, J Dolezal, V Ergo, H Fernández, B Fernández-Marín, J Galmes, J I García-Plazaola, L G Quintanilla, J Gulías, A Hernández, K Luo, J Martínez-Abaigar, M Nadal, Ü Niinemets, M E Núñez-Olivera, E Ostria-Gallardo, A V Perera-Castro, U Pérez-López, M Ribas-Carbo, M Roig-Oliver, R Rojas, P Sáez, T Tosens, R Viveros, D Xiong, J Yan, Y Zhang, J Gago

{"title":"What can we learn from the ecophysiology of plants inhabiting extreme environments?: from 'sherplants' to 'shercrops'.","authors":"J Flexas, A R Fernie, B Usadel, D Alonso-Forn, V Ardiles, M C Ball, D Ballesteros, L Bravo, T J Brodribb, M Carriquí, F Castanyer-Mallol, L A Cavieres, T Chondol, M J Clemente-Moreno, R E Coopman, L Corcuera, J De Vries, A Diaz-Espejo, J Dolezal, V Ergo, H Fernández, B Fernández-Marín, J Galmes, J I García-Plazaola, L G Quintanilla, J Gulías, A Hernández, K Luo, J Martínez-Abaigar, M Nadal, Ü Niinemets, M E Núñez-Olivera, E Ostria-Gallardo, A V Perera-Castro, U Pérez-López, M Ribas-Carbo, M Roig-Oliver, R Rojas, P Sáez, T Tosens, R Viveros, D Xiong, J Yan, Y Zhang, J Gago","doi":"10.1093/jxb/eraf236","DOIUrl":"https://doi.org/10.1093/jxb/eraf236","url":null,"abstract":"Already in the 19th Century it was proposed that ecophysiology could be best studied in regions with extreme climatic conditions. In the present perspective, we argue that perhaps this is timelier than ever. The main reason is the need to improve crops to be simultaneously more productive - due to increased population - and more stress-tolerant - due to climate change. Climate change induces plants to face not just the harsh but also the 'unexpected' (unpredictable) climatic conditions. In this sense, we hypothesize that 'sherplants', i.e. plants living in the extremes of plant life (e.g. hot deserts, Arctic and Antarctica, or high elevations) can provide cues on how to break the trade-off between productivity and stress tolerance, as they need to produce fast due to the very short growing period while being stress tolerant due to the harsh and unpredictable climate endured during most of the year. We present glimpses of results from three consecutive projects developed for the last 10 years, in which hundreds of species from different regions of the world have been studied. In particular, we propose a path for developing 'shercrops' learning from 'sherplants', debate whether some of the already studied species may have really broken the aforementioned trade-off, and present a number of interesting 'side' findings achieved when studying plants from extreme climates.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the role of DNA Damage Response in seed priming to uncover key players for multi-stress tolerance. 探索DNA损伤反应在种子启动中的作用，揭示多重胁迫耐受的关键因素。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-29 DOI: 10.1093/jxb/eraf237

Anca Macovei, Andrea Pagano, Conrado Jr Duenas, Susana Araujo, Alma Balestrazzi

{"title":"Exploring the role of DNA Damage Response in seed priming to uncover key players for multi-stress tolerance.","authors":"Anca Macovei, Andrea Pagano, Conrado Jr Duenas, Susana Araujo, Alma Balestrazzi","doi":"10.1093/jxb/eraf237","DOIUrl":"https://doi.org/10.1093/jxb/eraf237","url":null,"abstract":"Combined climatic stressors result in cumulative damage and unpredictable shocks to seed systems. Seed priming, a pre-sowing technique used to enhance seed vigour is a key tool to face climate change. Priming agents boost the DNA damage response during early seed imbibition, preserving genome integrity and ensuring germination. Based on these premises, to what extent could the DNA damage response support the seed response to multiple stresses? How could seed priming enhance DNA repair to better fight combined stressors? How far are we from understanding the mechanisms for multiple stress tolerance that can contribute to improved resilience in seeds? The state of the art is critically discussed considering the scanty knowledge on this topic, highlighting the complex scenario of multi-factorial stress combinations. Case studies showing the efficacy of seed priming in promoting multiple stress response are reviewed, integrating the role of cross-stress tolerance, target germplasm (from major to orphan crops), and the contribution of advanced omics/phenotyping tools. Expanding the current knowledge in seed biology, by focusing on the impact of multiple climatic stressors, is a challenge since there are still relevant open questions, concerning the way DNA damage response can be utilized in seeds, that must be addressed.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0