Results 61 to 70 of about 1,631 (188)

INDEPENDENT ORIGINATION OF FLORAL ZYGOMORPHY, A PREDICTED ADAPTIVE RESPONSE TO POLLINATORS: DEVELOPMENTAL AND GENETIC MECHANISMS [PDF]

, 2016
Observations of floral development indicate that floral organ initiation in pentapetalous flowers more commonly results in a medially positioned abaxial petal (MAB) than in a medially positioned adaxial petal (MAD), where the medial plane is defined by ...
Bukhari, Ghadeer, Zhang, Wenheng
core   +1 more source

Dual Isotope Analysis Reveals Phylogenetic Patterns and Novel Insights Into Methoxy Group Synthesis of Structural Biomolecules in Leaf and Woody Plant Tissues

Plant, Cell &Environment, EarlyView.
ABSTRACT Stable carbon and hydrogen isotopes of wood methoxy groups (δ2Hmeth, δ13Cmeth), mainly sourced by structural biomolecules like lignin and pectin, provide important insights into climatic, hydrological and physiological conditions. This study systematically investigated species‐specific δ2Hmeth and δ13Cmeth variations in leaves and woody twigs ...
Anna Wieland, Philipp Schuler, Matthias Saurer, Valentina Vitali, Markus Greule, Frank Keppler, Marco M. Lehmann   +6 more
wiley   +1 more source

Progress and problems in the assessment of flower morphology in higher-level systematics [PDF]

, 2018
Floral features used for characterization of higher-level angiosperm taxa (families, orders, and above) are assessed following a comparison of earlier (precladistic/premolecular) and current classifications.
Endress, Peter, Matthews, Merran
core  

Placing Nothophylica piloburmensis from Cretaceous amber into the angiosperm phylogeny

TAXON, Volume 74, Issue 4, Page 933-937, August 2025.
Abstract Recently, we redescribed an amber inclusion from mid‐Cretaceous Kachin amber of Myanmar, previously assigned to the extant genus Phylica in Rhamnaceae (core eudicots), and placed it in a new fossil‐genus, Nothophylica. Based on our reconstructions, we identified new floral features and instead suggested affinities within magnoliids, especially
Simon Beurel, Julien B. Bachelier, Clément Coiffard, Alexander R. Schmidt, Eva‐Maria Sadowski   +4 more
wiley   +1 more source

Comparative Genomics Insights Into the Evolutionary Disparities Between Nitroplast‐Evolved Ecotype UCYN‐A2 and Its Closest Relative UCYN‐A1

Ecology and Evolution, Volume 15, Issue 7, July 2025.
This paper conducted comparative genomic analyses among seven UCYN‐A strains in genome content, gene structure, and key metabolic protein genes. In general, our results demonstrated considerable disparities between UCYN‐A1 and UCYN‐A2, providing insights into the evolution of UCYN‐A and nitroplast.
Shiyun Han, Sijia Zhang, Wen Ge, Jianke Yang, Hui Peng, Jinming Gao, Mengsa Zhang, Yingying Xiao, Dongsheng Du, Xianzhao Kan   +9 more
wiley   +1 more source

First steps towards a floral structural characterization of the major rosid subclades [PDF]

, 2018
A survey of our own comparative studies on several larger clades of rosids and over 1400 original publications on rosid flowers shows that floral structural features support to various degrees the supraordinal relationships in rosids proposed by ...
Endress, P., Matthews, M.
core  

Evolutionary legacy of the “living fossil” genus Parrotia (Hamamelidaceae): genomic insights into species divergence and polygenic adaptation

The Plant Journal, Volume 123, Issue 2, July 2025.
Significance Statement Parrotia is a Tertiary relict “living fossil” tree genus with two extant species (P. subaequalis and P. persica) exhibiting a disjunct distribution between East Asia and West Asia. Despite their long evolutionary history, the genomic basis of adaptation and speciation in this “living fossil” tree genus remain largely unexplored ...
Yunyan Zhang, Kui Li, Yu Feng, Zhiyuan Li, Yimin Hu, Hamed Yousefzadeh, Malek Nasiri, Benjamin Adroit, Pengfu Li, Shan Lu, Pan Li, Hong Liu, Ye Peng, Chi Xu, Yingxiong Qiu, Zhongsheng Wang   +15 more
wiley   +1 more source

Early eudicot reproductive structure: Fruit and flower morphology of Ranunculaecarpus Samyl. from the Early Cretaceous of eastern Siberia

Acta Palaeobotanica, 2018
Floral and fruit morphology of the early eudicot Ranunculaecarpus quinquecarpellatus Samyl. is described based on details from sectioning and microscopy of the permineralized type material from the Albian Buor-Kemyus Formation of the Zyryanka coal basin.
STEVEN R. MANCHESTER, LINA B. GOLOVNEVA, DMITRY D. SOKOLOFF, ELSE MARIE FRIIS   +3 more
doaj   +1 more source

Diversification of the stem vascular system in a clade of recent radiation and multiple habit transitions: The Bunchosia clade (Malpighiaceae)

American Journal of Botany, Volume 112, Issue 6, June 2025.
Abstract Premise Within the Malpighiaceae, the Bunchosia clade is distinctive for its significant habit variation and abundance of different vascular variants. However, the processes underlying the diversification of the vascular system over time and the ontogenetic events involved remain unclear.
Angélica Quintanar‐Castillo, Andre M. Amorim, Marcelo R. Pace   +2 more
wiley   +1 more source

Synorganisation without organ fusion in the flowers of Geranium robertianum (Geraniaceae) and its not so trivial obdiplostemony [PDF]

, 2017
Background and Aims Synorganisation of floral organs, an important means in angiosperm flower evolution, is mostly realized by congenital or post-genital organ fusion.
Endress, Peter K.
core