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Journal of Plant Research

Hiromitsu Nakajima, Kiminori Itoh
Scopelophila ligulata is known to be a Fe-hyperaccumulator moss; however, its mechanism of accumulation and the effects of Fe on pigments remain unclear. To clarify the effects, we measured its metal and pigment concentrations. The Fe concentration in S. ligulata was 10-61 times higher than that in normal mosses, confirming that the moss is a Fe-hyperaccumulator. The black samples of S. ligulata had the highest Fe concentration (2.9 wt%) and the second in the order of decreasing Fe concentration (2.2 wt%), which explains their color and indicates that the excess amount of Fe is distributed through the plant body...
October 19, 2016: Journal of Plant Research
Mai Takagi, Takuya Sakamoto, Ritsuko Suzuki, Keiichirou Nemoto, Takeshi Obayashi, Takeshi Hirakawa, Tomoko M Matsunaga, Daisuke Kurihara, Yuko Nariai, Takeshi Urano, Tatsuya Sawasaki, Sachihiro Matsunaga
Aurora kinase (AUR) is a well-known mitotic serine/threonine kinase that regulates centromere formation, chromosome segregation, and cytokinesis in eukaryotes. In addition to regulating mitotic events, AUR has been shown to regulate protein dynamics during interphase in animal cells. In contrast, there has been no identification and characterization of substrates and/or interacting proteins during interphase in plants. The Arabidopsis thaliana genome encodes three AUR paralogues, AtAUR1, AtAUR2, and AtAUR3...
October 12, 2016: Journal of Plant Research
(no author information available yet)
No abstract text is available yet for this article.
October 12, 2016: Journal of Plant Research
Sachiko Nishida, Keisuke Hashimoto, Masahiro M Kanaoka, Ko-Ichi Takakura, Takayoshi Nishida
Reproductive interference (RI) may be a contributing factor to the displacement of native species by an alien congener, and RI strength has been shown theoretically to affect distributional relationships between species. Thus, variations in RI strength from alien to native species result in different consequences of invasions and efforts to conserve native species, but the variations have seldom been examined empirically. We therefore investigated RI strength variations from the alien species Taraxacum officinale and its hybrids to eight populations of native dandelions, four T...
September 22, 2016: Journal of Plant Research
Volkan Altay, Faruk Karahan, Munir Öztürk, Khalid Rehman Hakeem, Emre Ilhan, Mustafa Erayman
This paper covers studies on the molecular and ecological aspects of G. glabra var. glandulifera, G. flavescens ssp. flavescens and G. echinata collected from Hatay (Turkey); with the aim to better understand their genetic variation and ecological requirements for possible conservation programs. The material including total genomic DNA was extracted by the CTAB, and for PCR reaction, a total of 14 SSR primers developed for Medicago truncatula were used. PCR amplifications were performed in a Multigen(®) Thermal Cycler...
September 21, 2016: Journal of Plant Research
Kazuma Okada, Masato Wada, Shigeki Moriya, Yuichi Katayose, Hiroko Fujisawa, Jianzhong Wu, Hiroyuki Kanamori, Kanako Kurita, Harumi Sasaki, Hiroshi Fujii, Shingo Terakami, Hiroshi Iwanami, Toshiya Yamamoto, Kazuyuki Abe
Determining the molecular mechanism of fruit tree architecture is important for tree management and fruit production. An apple mutant 'McIntosh Wijcik', which was discovered as a bud mutation from 'McIntosh', exhibits a columnar growth phenotype that is controlled by a single dominant gene, Co. In this study, the mutation and the Co gene were analyzed. Fine mapping narrowed the Co region to a 101 kb region. Sequence analysis of the Co region and the original wild-type co region identified an insertion mutation of an 8202 bp long terminal repeat (LTR) retroposon in the Co region...
September 20, 2016: Journal of Plant Research
Sandeep Sen, Ameya Gode, Srirama Ramanujam, G Ravikanth, N A Aravind
The center of diversity of Piper nigrum L. (Black Pepper), one of the highly valued spice crops is reported to be from India. Black pepper is naturally distributed in India in the Western Ghats biodiversity hotspot and is the only known existing source of its wild germplasm in the world. We used ecological niche models to predict the potential distribution of wild P. nigrum in the present and two future climate change scenarios viz (A1B) and (A2A) for the year 2080. Three topographic and nine uncorrelated bioclim variables were used to develop the niche models...
September 13, 2016: Journal of Plant Research
Miguel A Pérez-Gutiérrez, María C Fernández, María J Salinas-Bonillo, Víctor N Suárez-Santiago, Samira Ben-Menni Schuler, Ana T Romero-García
Studies of pollen wall development produce a great deal of morphological data that supplies useful information regarding taxonomy and systematics. We present the exine development of Euptelea and Pteridophyllum, two taxa whose pollen wall development has never previously been studied using transmission electron microscopy. Both genera are representatives of the two earliest-diverging families of the order Ranunculales and their pollen data are important for the diagnosis of the ancestral pollen features in eudicots...
September 2, 2016: Journal of Plant Research
Jiangsong Fei, Sue Tan, Fengjiao Zhang, Lichun Hua, Yuan Liao, Weimin Fang, Fadi Chen, Nianjun Teng
No abstract text is available yet for this article.
September 2, 2016: Journal of Plant Research
Ikuo Nishida
No abstract text is available yet for this article.
August 24, 2016: Journal of Plant Research
Meng-Jun Li, Yu Qiao, Ya-Qing Li, Zhan-Liang Shi, Nan Zhang, Cai-Li Bi, Jin-Kao Guo
We isolated the TaMYBsm1 genes, encoding R2R3-type MYB proteins in common wheat, aimed to uncover the possible molecular mechanisms related to drought response. The TaMYBsm1 genes, TaMYBsm1-A, TaMYBsm1-B and TaMYBsm1-D, were isolated and analyzed from the common wheat cultivar Shimai 15. Their expression patterns under PEG 6000 and mannitol were monitored by semi-quantitative RT-PCR and β-glucuronidase (Gus) assay. The function of TaMYBsm1-D under drought stress in transgenic Arabidopsis plants was investigated, and the germination rate, water loss rate, as well as the proline and malondialdehyde (MDA) content were compared with that in wild type (WT) plants...
August 19, 2016: Journal of Plant Research
Yuki Sakamoto, Yuki Ogura-Tsujita, Kinuko Ito, Kenji Suetsugu, Jun Yokoyama, Jun Yamazaki, Tomohisa Yukawa, Masayuki Maki
The evolution of mycoheterotrophy has been accompanied by extreme reductions in plant leaf size and photosynthetic capacity. Partially mycoheterotrophic plants, which obtain carbon from both photosynthesis and their mycorrhizal fungi, include species with leaves of normal size and others that are tiny-leaved. Thus, plant species may lose their leaves in a gradual process of size reduction rather than through a single step mutation. Little is known about how the degree of mycoheterotrophy changes during reductions in leaf size...
August 19, 2016: Journal of Plant Research
Giuseppe Pellegrino
Reinforcement is the process by which selection favors traits that decrease mating between two incipient species in response to costly mating or the production of maladapted hybrids, causing the evolution of greater reproductive isolation between emerging species. I have studied a pair of orchids, Neotinea tridentata and N. ustulata, to examine the level of postmating pre- and post-zygotic isolating mechanisms that maintain these species, and the degree to which the boundary may still be permeable to gene flow...
August 8, 2016: Journal of Plant Research
Jiangsong Fei, Sue Tan, Fengjiao Zhang, Lichun Hua, Yuan Liao, Weimin Fang, Fadi Chen, Nianjun Teng
Spray cut chrysanthemums ornamental value and vase life are rapidly reduced with an increase in the pollen dispersal of the middle tubular bisexual flowers, and excessive pollen grains floating in the air are usually harmful to people. Thus, two cultivars were selected: the dehiscent 'Qx-097' and the indehiscent 'Qx-007', to investigate the morphological, structural and physiological differences in anthers. (1) Prior to the opening of the tubular flower, the anther was completely dehisced, and the pollen grains of 'Qx-097' were then released...
August 4, 2016: Journal of Plant Research
Giuseppe Pellegrino, Francesca Bellusci, Anna Maria Palermo
Reproductive success of plants may be affected by interactions with co-flowering species either negatively, through competition for pollinators, or positively, by means of a magnet species effect and floral mimicry. In this study, potential interactions between Iris tuberosa, a rewarding species, and Ophrys fusca, a sexually deceptive orchid, were explored in four populations in southern Italy. In each population plots showing different ratios of the examined species were arranged in the field, and in each plot the number of pollinators and fruit set were assessed...
August 1, 2016: Journal of Plant Research
Yu Zhong, Yang Li, Jay J Cheng
Developing a Se-enriched feed for animal has become a considerable effort. In this study, Landoltia punctata 7449 was grown over a 12 day period under concentrations of selenite (Na2SeO3) from 0 to 80 μmol L(-1). The growth rate, the chlorophyll fluorescence, the starch content and fatty acid were measured. Se at low concentrations of ≤20 μmol L(-1) had positive effects also on growth rate, fatty acid content and yield of the L. punctata. The appropriate Se treatment enhanced the activity of the photosynthetic system by increasing Fv, Fm, Fv/Fm and Fv/Fo and decreasing Fo...
September 2016: Journal of Plant Research
Lu-Liang Huang, Jian-Hua Jin, Cheng Quan, Alexei A Oskolski
A new species Camellia nanningensis was described on the basis of well-preserved mummified wood from the upper Oligocene Yongning Formation of Nanning Basin in Guangxi Province, South China. This represents the most ancient fossil wood assigned to Camellia, and the earliest fossil record of the family Theaceae in China. This fossil material shows that Camellia occurred in China as early as the late Oligocene, suggesting more ancient radiation of this genus than estimated by molecular dating.
September 2016: Journal of Plant Research
Dursun Kısa, Lokman Öztürk, Şaban Tekin
Heavy metals such as Cd are considered to be the most important pollutants in soil contamination. Cd is a non-essential element adversely affecting plant growth and development, and it has caused some physiological and molecular changes. Metallothioneins (MTs) are low molecular weight, cysteine-rich, and metal binding proteins. In this study, we aimed to evaluate the MT gene expression levels and minerals uptake in the tissues of Solanum lycopersicum exposed to Cd. The transcriptional expression of the MT genes was determined by real-time quantitative PCR...
September 2016: Journal of Plant Research
Hiroshi Tobe
Cardiopteris (Cardiopteridaceae), a twining herb of two or three species distributed from Southeast Asia to Northern Australia, requires an embryological study for better understanding of its reproductive features. The present study of C. quinqueloba showed that the ovule and seed development involves a number of unusual structures, most of which are unknown elsewhere in angiosperms. The ovule pendant from the apical placenta is straight (not orthotropous), ategmic, and tenuinucellate, developing a monosporic seven-celled/eight-nucleate female gametophyte with an egg apparatus on the funicular side...
September 2016: Journal of Plant Research
Satoko Iida, Miyuki Ikeda, Momoe Amano, Hidetoshi Sakayama, Yasuro Kadono, Keiko Kosuge
Heterophyllous aquatic plants produce aerial (i.e., floating and terrestrial) and submerged leaves-the latter lack stomata-while homophyllous plants contain only submerged leaves, and cannot survive on land. To identify whether differences in morphogenetic potential and/or physiological stress responses are responsible for variation in phenotypic plasticity between two plants types, responses to abscisic acid (ABA) and salinity stress were compared between the closely related, but ecologically diverse pondweeds, Potamogeton wrightii (heterophyllous) and P...
September 2016: Journal of Plant Research
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