Plant Diversity最新文献

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Stomatal dynamics are regulated by leaf hydraulic traits and guard cell anatomy in nine true mangrove species. 九种真红树林物种的气孔动态受叶片水力特征和防护细胞解剖结构的调节。

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2024-02-08 eCollection Date: 2024-05-01 DOI: 10.1016/j.pld.2024.02.003

Ya-Dong Qie, Qi-Wei Zhang, Scott A M McAdam, Kun-Fang Cao

Stomatal regulation is critical for mangroves to survive in the hyper-saline intertidal zone where water stress is severe and water availability is highly fluctuant. However, very little is known about the stomatal sensitivity to vapour pressure deficit (VPD) in mangroves, and its co-ordination with stomatal morphology and leaf hydraulic traits. We measured the stomatal response to a step increase in VPD in situ, stomatal anatomy, leaf hydraulic vulnerability and pressure-volume traits in nine true mangrove species of five families and collected the data of genome size. We aimed to answer two questions: (1) Does stomatal morphology influence stomatal dynamics in response to a high VPD in mangroves? with a consideration of possible influence of genome size on stomatal morphology; and (2) do leaf hydraulic traits influence stomatal sensitivity to VPD in mangroves? We found that the stomata of mangrove plants were highly sensitive to a step rise in VPD and the stomatal responses were directly affected by stomatal anatomy and hydraulic traits. Smaller, denser stomata was correlated with faster stomatal closure at high VPD across the species of Rhizophoraceae, and stomata size negatively and vein density positively correlated with genome size. Less negative leaf osmotic pressure at the full turgor (π_o) was related to higher operating steady-state stomatal conductance (g_s); and a higher leaf capacitance (C_leaf) and more embolism resistant leaf xylem were associated with slower stomatal responses to an increase in VPD. In addition, stomatal responsiveness to VPD was indirectly affected by leaf morphological traits, which were affected by site salinity and consequently leaf water status. Our results demonstrate that mangroves display a unique relationship between genome size, stomatal size and vein packing, and that stomatal responsiveness to VPD is regulated by leaf hydraulic traits and stomatal morphology. Our work provides a quantitative framework to better understand of stomatal regulation in mangroves in an environment with high salinity and dynamic water availability.

气孔调节对红树林在超盐碱潮间带生存至关重要，因为潮间带水压力大，水供应波动剧烈。然而，人们对红树林气孔对蒸汽压力不足（VPD）的敏感性及其与气孔形态和叶片水力特征的协调性知之甚少。我们测量了五科九种真正的红树林物种的气孔对蒸气压差阶跃增加的原位响应、气孔解剖、叶片水力脆弱性和压力-体积特征，并收集了基因组大小数据。我们的目的是回答两个问题：(1) 气孔形态是否影响红树林气孔对高 VPD 的动态响应？同时考虑基因组大小对气孔形态的可能影响；(2) 叶片水力特征是否影响红树林气孔对 VPD 的敏感性？我们发现，红树林植物的气孔对阶跃上升的 VPD 高度敏感，气孔反应直接受气孔解剖学和水力特征的影响。在根瘤菌科的所有物种中，气孔越小越密集与高 VPD 时气孔关闭速度越快相关，气孔大小与基因组大小呈负相关，叶脉密度与基因组大小呈正相关。叶片在完全张力下的负渗透压（πo）较低与稳态气孔导度（gs）较高有关；叶片电容（Cleaf）较高和叶木质部抗栓塞能力较强与气孔对 VPD 增加的反应较慢有关。此外，气孔对 VPD 的反应速度还受到叶片形态特征的间接影响，而叶片形态特征又受到现场盐度的影响，进而影响叶片的水分状态。我们的研究结果表明，红树林在基因组大小、气孔大小和叶脉排列之间显示出一种独特的关系，气孔对VPD的反应能力受叶片水分特征和气孔形态的调节。我们的工作提供了一个定量框架，有助于更好地理解高盐度和动态水供应环境中红树林的气孔调节。

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引用次数: 0

pyIFPNI: A package for querying and downloading plant fossil data from the IFPNI pyIFPNI：从国际植物化石网络（IFPNI）查询和下载植物化石数据的软件包

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-12-01 DOI: 10.1016/j.pld.2023.12.001

Bailong Zhao

引用次数: 0

Integrating high-volume molecular and morphological data into the evolutionary studies of Allium 将大量分子和形态学数据整合到 Allium 的进化研究中

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-12-01 DOI: 10.1016/j.pld.2023.12.002

Xing-jin He

引用次数: 0

Large-scale interplant exchange of macromolecules between soybean and dodder under nutrient stresses 养分胁迫下大豆和菟丝子之间大分子的大规模植株间交换

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-12-01 DOI: 10.1016/j.pld.2023.11.005

Jingxiong Zhang, Shalan Li, Wenxing Li, Zerui Feng, Shuhan Zhang, Xijie Zheng, Yuxing Xu, Guojing Shen, Man Zhao, Guoyan Cao, Xuna Wu, Jianqiang Wu

引用次数: 0

Simulated climate warming strongly constrains the seedling establishment of alpine cushion Arenaria oreophila 模拟气候变暖严重制约了高山簕杜鹃幼苗的生长

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-12-01 DOI: 10.1016/j.pld.2023.11.003

Renyu Zhou, Pengfei Yang, Xufang Chen, Minshu Song, Hang Sun, Jianguo Chen

引用次数: 0

Global patterns and ecological drivers of taxonomic and phylogenetic endemism in angiosperm genera 被子植物属的分类和系统发育特有性的全球模式和生态驱动因素

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-12-01 DOI: 10.1016/j.pld.2023.11.004

Hong Qian, Brent D. Mishler, Jian Zhang, Shenhua Qian

引用次数: 0

The first mitogenome of Lauraceae (Cinnamomum chekiangense). 月桂科（Cinnamomum chekiangense）的第一个有丝分裂基因组。

IF 4.8 1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-11-18 eCollection Date: 2024-01-01 DOI: 10.1016/j.pld.2023.11.001

Changwei Bi, Ning Sun, Fuchuan Han, Kewang Xu, Yong Yang, David K Ferguson

•The first reported mitochondrial genome (Cinnamomum chekiangense) of the Lauraceae family.•The mitogenome of C. chekiangense retains almost all of the ancestral protein-coding genes and has the highest RNA editing number in angiosperms.•Both of the plastid and mitochondrial phylogenetic trees support the magnoliids as a sister group of monocots and eudicots.

-C.chekiangense的有丝分裂基因组保留了几乎所有的祖先蛋白质编码基因，并具有被子植物中最高的RNA编辑数。

引用次数: 0

The worldwide allometric relationship in anatomical structures for plant roots 全球植物根系解剖结构的异速关系

1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-11-01 DOI: 10.1016/j.pld.2023.05.002

Yue Zhang, Jing-Jing Cao, Qing-Pei Yang, Ming-Zuo Wu, Yong Zhao, De-Liang Kong

The cortex (i.e., absorptive tissue) and stele (transportive vascular tissue) are fundamental to the function of plant roots. Unraveling how these anatomical structures are assembled in absorptive roots is essential for our understanding of plant ecology, physiology, and plant responses to global environmental changes. In this review, we first compile a large data set on anatomical traits in absorptive roots, including cortex thickness and stele radius, across 698 observations and 512 species. Using this data set, we reveal a common root allometry in absorptive root structures, i.e., cortex thickness increases much faster than stele radius with increasing root diameter (hereafter, root allometry). Root allometry is further validated within and across plant growth forms (woody, grass, and liana species), mycorrhiza types (arbuscular mycorrhiza, ectomycorrhiza, and orchid mycorrhizas), phylogenetic gradients (from ferns to Orchidaceae), and environmental change scenarios (e.g., elevation of atmospheric CO₂ concentration and nitrogen fertilization). These findings indicate that root allometry is common in plants. Importantly, root allometry varies greatly across species. We then summarize recent research on the mechanisms of root allometry and potential issues regarding these mechanisms. We further discuss ecological and evolutionary implications of root allometry. Finally, we propose several important research directions that should be pursued regarding root allometry.

皮层（即吸收组织）和茎干（运输维管组织）是植物根系功能的基础。揭示这些解剖结构是如何在吸收根中组装的，对于我们了解植物生态学、生理学和植物对全球环境变化的反应至关重要。在这篇综述中，我们首先汇编了一个关于吸收根解剖特征的大型数据集，包括皮层厚度和茎杆半径，涉及 698 个观测点和 512 个物种。利用该数据集，我们揭示了吸收根结构中常见的根异构现象，即随着根直径的增加，皮层厚度的增加速度远远快于根茎半径的增加速度（以下简称根异构现象）。在植物生长形式（木本植物、草本植物和藤本植物）、菌根类型（丛生菌根、外生菌根和兰科菌根）、系统发育梯度（从蕨类植物到兰科植物）和环境变化情景（如大气二氧化碳浓度升高和氮肥施用）中，根异构现象都得到了进一步验证。这些发现表明，根的异生现象在植物中很常见。重要的是，不同物种的根异化作用差异很大。然后，我们总结了最近关于根系异生机制的研究以及这些机制可能存在的问题。我们还进一步讨论了根异形对生态和进化的影响。最后，我们提出了几个关于根系异生的重要研究方向。

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引用次数: 0

Corrigendum to Patterns of floristic inventory and plant collections in Myanmar [Plant Divers. 45 (3) (2023) 302–308] 缅甸植物名录和植物收集模式》更正[《植物多样性》。 45 (3) (2023) 302-308]

1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-11-01 DOI: 10.1016/j.pld.2023.10.002

Thant Sin Aung , Alice C. Hughes , Phyo Kay Khine , Bo Liu , Xiao-Li Shen , Ke-Ping Ma

引用次数: 0

Parasite–host network analysis provides insights into the evolution of two mistletoe lineages (Loranthaceae and Santalaceae) 寄生虫-宿主网络分析为两个槲寄生品系（槲寄生科和山檀科）的进化提供了启示

1区生物学 Q1 PLANT SCIENCES

Plant Diversity

Pub Date : 2023-11-01 DOI: 10.1016/j.pld.2023.03.008

Jin Zhao , Yuanjie Li , Xuanni Wang , Manru Li , Wenbin Yu , Jin Chen , Ling Zhang

Mistletoes are ecologically important parasitic plants, with > 1600 species from five lineages worldwide. Mistletoe lineages exhibit distinct patterns of species diversification and host specificity, however, the mechanisms underlying these differences are poorly understood. In this study, we analysed a comprehensive parasite–host network, including 280 host species from 60 families and 22 mistletoe species from two lineages (Santalaceae and Loranthaceae) in Xishuangbanna, located in a biodiversity hotspot of tropical Asia. We identified the factors that predict the infection strength of mistletoes. We also detected host specificity and the phylogenetic signal of mistletoes and their hosts. We found that this interaction network could be largely explained by a model based on the relative abundance of species. Host infection was positively correlated with diameter at breast height and tree coverage, but negatively correlated with wood density. Overall, closely related mistletoe species tend to interact more often with similar hosts. However, the two lineages showed a significantly different network pattern. Rates of host generality were higher in Loranthaceae than in Santalaceae, although neither lineage showed phylogenetic signal for host generality. This study demonstrates that the neutral interaction hypothesis provides suitable predictions of the mistletoe–host interaction network, and mistletoe species show significant phylogenetic signals for their hosts. Our findings also indicate that high species diversification in Loranthaceae may be explained by high rates of host generality and the evolutionary history shared by Loranthaceae species with diverse host plants in the tropics.

槲寄生是一种具有重要生态意义的寄生植物，在全世界有五个品系 1600 个物种。槲寄生品系在物种多样化和宿主特异性方面表现出不同的模式，然而，人们对这些差异背后的机制却知之甚少。在这项研究中，我们分析了位于亚洲热带生物多样性热点地区西双版纳的一个全面的寄生虫-宿主网络，其中包括来自 60 个科的 280 个宿主物种和来自两个品系（山桐子科和槲寄生科）的 22 个槲寄生物种。我们确定了预测槲寄生感染强度的因素。我们还检测了槲寄生及其寄主的寄主特异性和系统发育信号。我们发现，基于物种相对丰度的模型可以在很大程度上解释这种相互作用网络。寄主感染与胸径和树木覆盖率呈正相关，但与木材密度呈负相关。总体而言，亲缘关系密切的槲寄生物种往往更频繁地与相似的寄主发生相互作用。不过，这两个品系的网络模式明显不同。罗兰科的寄主普遍性比率高于山桐子科，尽管这两个品系都没有显示出寄主普遍性的系统发育信号。这项研究表明，中性互作假说对槲寄生-寄主互作网络提供了适当的预测，槲寄生物种对其寄主显示出显著的系统发生学信号。我们的研究结果还表明，槲寄生科物种的高度多样化可能是由于寄主的高通用性以及槲寄生科物种与热带地区多种寄主植物共享的进化历史造成的。

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