摘要：Tea-oil pollen toxic to honeybee larvae:When honeybees forage on the flowers ofCamellia oleifera, a widely planted oilseed crop, t
Tea-oil pollen toxic to honeybee larvae: When honeybees forage on the flowers of Camellia oleifera, a widely planted oilseed crop, their larvae die, but what kills the larvae remains controversial. Using bagging and caging studies, the authors show that birds effectively pollinate C. oleifera flowers. In contrast to the hypothesis of nectar toxicity, Zhang et al. (pages 2313-2316) propose that C. oleifera may have evolved toxic pollen to limit overexploitation of its pollen by bees. Toxicity tests indicated that C. oleifera pollen harmed honeybee larvae significantly more than pollen from Brassica napus, another oilseed crop, and C. oleifera pollen contains the insecticidal compound theasaponin. The cover shows simultaneous pollen presentation in a C. oleifera flower.
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Commentary
Why is pollen in Camellia oleifera inedible to honeybees?
Jannathan Mamut, Wei-Bing Zhang, Lu-Lu Tang
This Commentary examines a recent study that addressed a long-standing controversy: Is the lethal effect of Tea-oil Camellia on honeybee larvae due to nectar or pollen toxicity? Flowers of Camellia oleifera are adapting to bird pollination, evolving ‘anti-bee’ traits such as theasaponin-containing pollen, which is toxic to bee larvae.
News and Views
New perspective on pollen toxicity in Camellia oleifera
Bin Yuan, Xiao-ming Fan, Fu-liang Hu, Yi-bo Luo
Exploring pollen chemical defenses in the economically important plant Camellia oleifera and examining their effects on honeybee flower-visiting behavior improves the understanding of the ecological functions of pollen and informs efforts to manage honeybees to bolster C. oleifera production.
JIPB | 植物所罗毅波/浙大胡福良团队提出看待油茶花粉毒性的新角度
Brief Communications
Lethal effects of tea-oil Camellia on honeybee larvae due to pollen toxicity
Chuan Zhang, Hui-Hui Feng, Ya-Lei Liu, Shuang-Quan Huang
Toxicity tests on tea-oil Camellia flowers (Camellia oleifera) indicated that its pollen harmed honeybee larvae significantly more than pollen from oilseed rape (Brassica napus) flowers. The C. oleifera pollen contained high levels of the toxic triterpenoid theasaponin, which was undetectable in nectar.
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JIPB | 华中师范大学黄双全团队提出油茶花粉是引起家养蜜蜂幼虫中毒的主因
Generation of humidity-sensitive genic male sterility in maize and wheat for hybrid seed production
Xingchen Xiong, Dan Wang, Changfeng Guo, Guiqiang Fan, Yingchun Zhang, Bo Song, Bingzhu Hou, Yuanyuan Yan, Chuanxiao Xie, Xiaoduo Lu, Chunyi Zhang, Xiaoquan Qi
Loss of function of a conserved POACEATAPETOL SYNTHASE1 confers humidity sensitive genic male sterility in maize and wheat. This system yielded >99% pure hybrid seed in maize.
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JIPB | 中国科学院植物研究所漆小泉课题组首次在玉米和小麦中创造出湿敏雄性不育材料促进杂交育种
Tradeoff between productivity and stability across above- and below-ground communities
Zonghao Hu, Haiyan Liu, Junjie Yang, Bin Hua, Michael Bahn, Shuang Pang, Tingting Li, Wei Yang, Honghui Wu, Xingguo Han, Ximei Zhang
An 11-year nitrogen addition experiment reveals that for both plants and soil microorganisms, the ruderal strategists had higher productivity but lower stability, while the tolerant strategists had higher stability and lower productivity, leading to the tradeoff between productivity and stability within and across above- and below-ground communities.
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JIPB | 农科院环发所张西美团队揭示地上、地下群落的生产力与稳定性的权衡
OsFAD1–OsMYBR22 modulates clustered spikelet through regulating BRD3 in rice
Mingxing Cheng, Huanran Yuan, Ruihua Wang, Fengfeng Fan, Fengfeng Si, Xiong Luo, Wei Liu, Shaoqing Li
The phenotype of rice clustered spikelet mutants results from the upregulation of the FAD/NAD(P)-binding oxidoreductase family gene OsFAD1. Enhanced interaction between OsFAD1 and the transcription factor OsMYBR22 leads to the upregulation of the spikelet clustering-related BR catabolic gene BRD3.
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JIPB | 武汉大学李绍清教授团队揭示水稻小穗簇生的新机制
New Technology
MetMiner: A user-friendly pipeline for large-scale plant metabolomics data analysis
Xiao Wang, Shuang Liang, Wenqi Yang, Ke Yu, Fei Liang, Bing Zhao, Xiang Zhu, Chao Zhou, Luis A. J. Mur, Jeremy A. Roberts, Junli Zhang, Xuebin Zhang
MetMiner, a user-friendly, full-functionality pipeline designed for plant metabolomics data analysis, leverages advanced mass spectrometry data processing frameworks, offering robust data interaction capabilities and efficient data mining methods, enabling wet-lab biologists to more easily handle large-scale metabolomics datasets.
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Abiotic Stress Responses
The LpHsfA2-molecular module confers thermotolerance via fine tuning of its transcription in perennial ryegrass (Lolium perenne L.)
Guangjing Ma, Zhihao Liu, Shurui Song, Jing Gao, Shujie Liao, Shilong Cao, Yan Xie, Liwen Cao, Longxing Hu, Haichun Jing, Liang Chen
In perennial ryegrass (Lolium perenne), the heat shock factors LpHsfA2/4/5 influence heat tolerance by self-regulating and regulating the expression of the heat-shock protein gene LpHSP18.2 and the ascorbate peroxidase gene LpAPX1. Natural variation in the LpHsfA2 promoter region leads to differences in heat tolerance in perennial ryegrass germplasm.
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JIPB | 中国科学院陈良团队/景海春团队联合揭示LpHsfA2/4/5分子模块级联调控多年生黑麦草抵御高温胁迫的分子机制
Cell and Developmental Biology
Coordination of miR319–TaPCF8 with TaSPL14 orchestrates auxin signaling and biosynthesis to regulate plant height in common wheat
Pingan Hao, Chao Jian, Chenyang Hao, Shujuan Liu, Jian Hou, Hongxia Liu, Haixia Liu, Xueyong Zhang, Huixian Zhao, Tian Li
The wheat microRNA Tae-miR319 negatively regulates plant height by targeting the RNA encoding a transcriptional repressor of genes involved in auxin signaling; haplotypes of this repressor gene are associated with plant height and underwent global breeding selection.
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JIPB | 中国农科院作科所与西北农林合作揭示miR319-TaPCF8模块通过生长素途径调控小麦株高的新机制
MYB52 negatively regulates ADF9-meditated actin filament bundling in Arabidopsis pavement cell morphogenesis
Tianqi Qiu, Yuanyuan Su, Nannan Guo, Xinyuan Zhang, Pengfei Jia, Tonglin Mao, Xianling Wang
In Arabidopsis, the transcription factor MYB52 represses the expression of ACTIN DEPOLYMERIZING FACTOR9, leading to the decrease of actin filament bundles, thereby regulating pavement cell morphogenesis. In the myb52 mutant, the ACTIN DEPOLYMERIZING FACTOR9 activity is enhanced, promoting pavement cell morphogenesis.
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JIPB丨沈阳农业大学王显玲课题组揭示了微丝结合蛋白ADF9调控拟南芥铺板细胞形态建成的分子机制
The OsAGO2–OsNAC300–OsNAP module regulates leaf senescence in rice
Shaoyan Zheng, Junyu Chen, Ying He, Jingqin Lu, Hong Chen, Zipeng Liang, Junqi Zhang, Zhenlan Liu, Jing Li, Chuxiong Zhuang
Rice ARGONAUTE 2 binds to the microRNA miR2863c to regulate the expression of the transcription factor gene OsNAC300 through DNA methylation, ensuring the correct initiation of leaf senescence. The transcription factor OsNAP initiates the normal onset of senescence, directly or indirectly regulating the expression of senescence-associated genes and chloroplast development.
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JIPB | 华南农业大学庄楚雄/郑少燕团队揭示水稻叶片衰老的表观遗传调控机制
Regulation of cryptochrome-mediated blue light signaling by the ABI4–PIF4 module
Pengyu Song, Zidan Yang, Huaichang Wang, Fangfang Wan, Dingming Kang, Wenming Zheng, Zhizhong Gong, Jigang Li
The AP2/ERF-family transcription factor ABSCISIC ACID-INSENSITIVE 4 interacts with the growth-promoting transcription factor PHYTOCHROME INTERACTING FACTOR 4 (PIF4) and the blue light photoreceptors cryptochromes, and post-translationally promotes PIF4 protein accumulation under blue light, thus playing an important role in mediating blue light signaling in Arabidopsis.
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JIPB | 中国农业大学李继刚课题组揭示ABI4调控蓝光信号转导的分子机制
Transcriptional regulation of phospholipid transport in cotton fiber elongation by GhMYB30D04–GhHD1 interaction complex
Qingwei Song, Chuanhui Du, Yiyang Xu, Jin Wang, Min Lin, Kaijing Zuo
The cotton transcription factor GhMYB30D04 interacts with the homeodomain-leucine zipper transcription factor GhHD1; the GhMYB30D04- GhHD1 complex enhances the expression of genes related to phospholipid transport and accumulation and thus promotes fiber elongation.
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JIPB |上海交通大学农生学院左开井教授团队揭示MYB- HD-ZIP IV转录复合物通过调控磷脂转运影响棉花纤维发育的新机制
Molecular Physiology
Natural variations in MdNAC18 exert major genetic effect on apple fruit harvest date by regulating ethylene biosynthesis genes
Guo Wen, Bei Wu, Yi Wang, Ting Wu, Zhenhai Han, Xinzhong Zhang
Natural variants in the transcription factor gene MdNAC18 affect apple fruit harvest date by modulating ethylene biosynthesis. Two single-nucleotide polymorphisms (SNPs) in MdNAC18, and SNPs and an insertion/deletion in two ethylene biosynthesis genes constitute a genetic variation network and provide an optimized genomics-assisted prediction model for apple breeding.
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JIPB | 中国农业大学初步解析苹果果实成熟期的分子数量遗传学调控网络
A PpEIL2/3–PpNAC1–PpWRKY14 module regulates fruit ripening by modulating ethylene production in peach
Yudi Liu, Wen Xiao, Liao Liao, Beibei Zheng, Yunpeng Cao, Yun Zhao, Ruo-Xi Zhang, Yuepeng Han
The transcription factors PpWRKY14 and PpNAC1 promote ripening during the late stages of fruit development, which is accompanied by decreased expression of two repressors of PpNAC1.
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JIPB | 中国科学院武汉植物园韩月彭团队发现桃果实乙烯合成调控新机制
Anchorene, a carotenoid-derived growth regulator, modulates auxin homeostasis by suppressing GH3-mediated auxin conjugation
Danping Ke, Yinpeng Xie, Haipeng Li, Liqun Hu, Yi He, Chao Guo, Yahui Zhai, Jinggong Guo, Kun Li, Zongyan Chu, Junli Zhang, Xuebin Zhang, Salim Al-Babili, Kai Jiang, Yuchen Miao, Kun-Peng Jia
Anchorene, a carotenoid-derived compound, modulates auxin homeostasis and root development by enhancing levels of the auxin indole-3-acetic acid and repressing auxin conjugation mediated by the auxin-amido synthetase GRETCHEN HAGEN 3, revealing the significant role of apocarotenoids in regulating plant development.
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JIPB | 河南大学与合作单位共同揭示类胡萝卜素代谢产物通过抑制GH3家族成员活性调控植物体内生长素稳态的分子机制
Photosynthesis and Crop Physiology
The genome of Eleocharis vivipara elucidates the genetics of C3–C4 photosynthetic plasticity and karyotype evolution in the Cyperaceae
Hongbing Liu, Hang Zhao, Yanwen Zhang, Xiuli Li, Yi Zuo, Zhen Wu, Kaining Jin, Wenfei Xian, Wenzheng Wang, Weidong Ning, Zijian Liu, Xiaoxiao Zhao, Lei Wang, Rowan F. Sage, Tiegang Lu, Matt Stata, Shifeng Cheng
Eleocharis vivipara provides a prime model for studying photosynthetic plasticity, as it uses C3 photosynthesis underwater and C4 photosynthesis on land. The assembled genome and dynamic gene expression patterns provide new insights into the genetic basis of this photosynthetic transition, which can contribute to crop improvement and breeding strategies.
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JIPB | 中国农科院基因组所程时锋课题组揭示大莎草C3–C4光合作用转换遗传基础和莎草科核型演化
Plant Biotic Interactions
The plant terpenes DMNT and TMTT function as signaling compounds that attract Asian corn borer (Ostrinia furnacalis) to maize plants
Mengjie Zhao, Shijie Huang, Qingyang Zhang, Yuming Wei, Zhen Tao, Chuanhong Wang, Yibing Zhao, Xinqiao Zhang, Jinghui Dong, Ling Wang, Chen Chen, Tengyue Wang, Peijin Li
Maize plants infested by Asian corn borer larvae produce terpene compounds, termed herbivory-induced plant volatiles, that attract additional corn borer larvae. When the maize genes encoding enzymes involved in biosynthesis of these compounds are knocked out, the maize plants are less attractive to corn borer larvae.
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JIPB丨安徽农业大学生命科学学院李培金团队揭示DMNT和TMTT在吸引亚洲玉米螟行为中的新功能
Profiling of Phakopsora pachyrhizi transcriptome revealed co-expressed virulence effectors as prospective RNA interference targets for soybean rust management
Haibing Ouyang, Guangzheng Sun, Kainan Li, Rui Wang, Xiaoyu Lv, Zhichao Zhang, Rong Zhao, Ying Wang, Haidong Shu, Haibin Jiang, Sicong Zhang, Jinbin Wu, Qi Zhang, Xi Chen, Tengfei Liu, Wenwu Ye, Yan Wang, Yuanchao Wang
Transcriptome and immunological analysis identified three effector genes of rust fungus as suppressors of plant immune responses, and nanometer nucleic acid pesticides were developed to target them, providing an effective strategy to protect soybean against soybean rust.
JIPB | 南京农业大学王源超课题组提出大豆锈病菌防治新策略
Regulation of maize growth and immunity by ZmSKI3-mediated RNA decay and post-transcriptional gene silencing
Jie Gao, Na Zhang, Guohui Liu, Jinjun Tian, Mengyao Chen, Ying Wang, Ye Xing, Ying Zhang, Chenyang Zhao, Xiaohuan Mu, Yanwen Yu, Hongbin Niu, Jiankun Li, Jihua Tang, Mingyue Gou
ZmSKI3 mediates the 3'-5' degradation of RNAs. Knockout of ZmSKI3 leads to enhanced disease resistance and retarded plant growth, and overexpression of ZmSKI3 results in increased disease susceptibility, revealing the sophisticated regulation of plant growth and immunity by ZmSKI3-mediated RNA decay and post-transcriptional gene silencing in maize.
来源：科创中国一点号
