Abstract：
:We previously reported the occurrence of triploid strains in Japanese populations of Cayratia japonica (Thunb.) Gagnep. Interestingly, the triploid and most diploid strains had variably reduced pollen fertility. Two questions emerged from this earlier work: (1) How do triploids arise, and are they allotriploids or autotriploids? and (2) Why is there low pollen fertility in some diploid plants? We used a molecular genetic approach to determine the phylogenetic origins of triploids in C. japonica and the closely related species Cayratia tenuifolia (Wight & Arn.) Gagnep. In our analysis, we compared the sequences of the nuclear single-copy genes LEAFY and ASYMMETRIC LEAVES1. As a result, most triploids and diploids were heterozygous for the loci examined; the triploid genome shared an allele with the diploid genome, but other alleles differed between the ploidies. Therefore, Japanese populations of C. japonica and C. tenuifolia almost certainly arose from repeated hybridization events among genetically differentiated strains. Using our sequence data, we discuss possible scenarios accounting for the occurrence of triploids in the two species of Cayratia.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Tsukaya H,Ishikawa N,Okada Hdoi
10.1007/s10265-011-0467-1subject
Has Abstractpub_date
2012-07-01 00:00:00pages
475-81issue
4eissn
0918-9440issn
1618-0860journal_volume
125pub_type
杂志文章abstract：:Plant organ growth changes under genetic and environmental influences can be observed as altered cell proliferation and volume growth. The two aspects are mutually dependent and intricately related. For comprehensive growth analysis, it is necessary to specify the relationship quantitatively. Here, we develop a simple...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0247-x
更新日期：2006-03-01 00:00:00
abstract：:In general, Glomeromycotina was thought to be the earliest fungi forming mycorrhiza-like structure (MLS) in land plant evolution. In contrast, because the earliest divergent lineage of extant land plants, i.e. Haplomitriopsida liverworts, associates only with Mucoromycotina mycobionts, recent studies suggested that th...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01145-3
更新日期：2019-11-01 00:00:00
abstract：:Leaf physiological and gas-exchange traits of a summer-green herbaceous perennial, Parasenecio yatabei, growing along a stream were examined in relation to leaf age. In its vegetative phase, the aerial part of this plant consists of only one leaf and provides an ideal system for the study of leaf longevity. Volumetric...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-007-0122-z
更新日期：2008-01-01 00:00:00
abstract：:Root hairs expand the effective root surface to increase the uptake of nutrients and water from the soil. Here the local effects of the two major nitrogen sources, ammonium and nitrate, on root hairs were investigated using split plates. In three contrasting accessions of A. thaliana, namely Col-0, Tsu-0 and Sha, root...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-015-0733-8
更新日期：2015-09-01 00:00:00
abstract：:We measured the levels of radioactive caesium (RACs; ¹³⁴Cs and ¹³⁷Cs) in plants and soil in a grassland, 32 km northwest of the Fukushima 1 Nuclear Power Plant, from June 2011 to October 2012. In 2011, the highest RACs levels (¹³⁴Cs + ¹³⁷Cs) in plants and in the 0-5 cm soil layer were approximately 80 kBq per kg dry w...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-013-0608-9
更新日期：2014-01-01 00:00:00
abstract：:The thermogenesis and flowering biology of Colocasia gigantea (Blume) Hook. f. were studied from December 2005 to February 2006 on Espiritu Santo, Vanuatu (South Pacific). Endogenous thermogenesis was measured in two ways: (1) continuously over 5-day periods, and (2) over 3 h during maximum heating. The study showed t...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-007-0129-5
更新日期：2008-01-01 00:00:00
abstract：:Anthocyanin synthesis and chlorophyll degradation in regenerated torenia (Torenia fournieri Linden ex Fourn.) shoots induced by osmotic stress with 7% sucrose were examined to identify the genes regulating the underlying molecular mechanism. To achieve this, suppression subtractive hybridization was performed to enric...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0264-4
更新日期：2006-05-01 00:00:00
abstract：:Expansin is a non-enzymatic protein which plays a pivotal role in cell wall loosening by inducing stress relaxation and extension in the plant cell wall. Previous studies on Arabidopsis, Petunia × hybrida, and tomato demonstrated that the suppression of expansin gene expression reduced plant growth but expansin overex...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1067-0
更新日期：2019-03-01 00:00:00
abstract：: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 Chin...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0846-8
更新日期：2016-09-01 00:00:00
abstract：:Salt tolerance mechanisms were studied in three Irano-Turanian halophytic species from the Brassicaceae (Lepidium latifolium, L. perfoliatum and Schrenkiella parvula) and compared with the glycophyte Arabidopsis thaliana. According to seed germination under salt stress, L. perfoliatum was the most tolerant species, ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1053-6
更新日期：2018-11-01 00:00:00
abstract：:The ecological stoichiometry of Moso bamboo (Phyllostachys edulis) during the "explosive growth period" (EGP) remains unknown. In a previous study, we showed that the carbon (C) required by shoots during the EGP is derived from attached mature bamboos. In this study, we attempted to answer the following two questions:...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1070-5
更新日期：2019-01-01 00:00:00
abstract：:The pollen morphology of 11 genera and 11 species of the Hydrocharitaceae and one species of the Najadaceae was studied using scanning and transmission electron microscopies, and the exine structures and sculptures are discussed in relation to pollination mechanisms and the molecular phylogeny. The pollen grains of th...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-004-0155-5
更新日期：2004-08-01 00:00:00
abstract：:We present a comparative study of the floral structure and development of Nartheciaceae, a small dioscorealean family consisting of five genera (Aletris, Lophiola, Metanarthecium, Narthecium, and Nietneria). A noticeable diversity existed in nine floral characters. Analyses of their respective character states in the ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1026-9
更新日期：2018-05-01 00:00:00
abstract：:Hybridization between crops and their wild relatives potentially threatens the genetic identity of the wild plants, particularly in the case of genetically modified crops. Only a few studies have examined the use of temporal isolation to prevent hybridization, and the indices used in those studies, (e.g., the days of ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-013-0592-0
更新日期：2014-01-01 00:00:00
abstract：:Regulation of defense in plants is a complex process mediated by various signaling pathways. Promoter analysis of defense-related genes is useful to understand these signaling pathways involved in regulation. To this end, the regulation of the polygalacturonase-inhibiting protein encoding gene from Vitis vinifera L. (...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-012-0515-5
更新日期：2013-03-01 00:00:00
abstract：:Cyrtomium is an Asiatic genus characterized by anastomosing veins with included veinlets, and comprises about 40 species. We sequenced rbcL and trnL-F sequences of 19 species of Cyrtomium and eight species from related genera in order to elucidate a molecular phylogeny of the genus using maximum-parsimony methods. The...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0201-y
更新日期：2005-04-01 00:00:00
abstract：:We assessed leaf-area density (LAD; m(2) m(-3)) within the crown of Aucuba japonica (Cornaceae) growing under different light regimes and analyzed the components of crown architecture that most influenced variation in LAD. At a whole-crown level, extension-unit (EU) density (EUs/m(3)) had the greatest impact on LAD. T...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0222-6
更新日期：2005-10-01 00:00:00
abstract：:Phytagel media were evaluated as systems to mechanically impede roots of A. thaliana. Studying mechanical properties of Phytagel and exploring the root response to mechanical stimulation can facilitate plant culture and plant development. Breaking strengths of 0.5-2.0% phytagel media were tested by uniaxial compressio...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-017-0926-4
更新日期：2017-09-01 00:00:00
abstract：:Understanding the mechanism for salt tolerance in wild soybean (Glycine soja) can help researchers improve that trait in cultivated soybean lines. We analyzed the effects of excess NaCl on the growth, physiology, and ion distribution in three soybean species: wild G. soja (W8), semi-wild G. gracilis (SW18), and the cu...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-017-0929-1
更新日期：2017-07-01 00:00:00
abstract：:Plants generate various tissues and organs via a strictly regulated developmental program. The plant vasculature is a complex tissue system consisting of xylem and phloem tissues with a layer of cambial cells in between. Multiple regulatory steps are involved in vascular development. Although molecular and genetic stu...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-017-0998-1
更新日期：2018-01-01 00:00:00
abstract：:Contrary to extensive researches on the roles of metallothioneins (MTs) in metal tolerance of animals, the roles of plant MTs in metal tolerance are largely under investigation. In this study, we evaluated the functional role of type 2 MT from Colocasia esculenta (CeMT2b) in Zn tolerance of tobacco and E. coli cells. ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-012-0492-8
更新日期：2012-11-01 00:00:00
abstract：:The vegetative phenology of 29 alpine species, including herbaceous and woody summergreens and evergreens, was investigated. Summergreen species initiated and completed leaf growth earlier than evergreen species. The green period of leaves in summergreen plants was determined largely by the time of growth initiation. ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-010-0320-y
更新日期：2010-09-01 00:00:00
abstract：:Pristine tropical rainforests in Southeast Asia have rich species diversity and are important habitats for many plant species. However, the extent of these forests has declined in recent decades and they have become fragmented due to human activities. These developments may reduce the genetic diversity of species with...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-007-0078-z
更新日期：2007-05-01 00:00:00
abstract：:We have achieved the symbiotic cultivation of an apparently achlorophyllous orchid, Epipogium roseum Lindl., with a mycorrhizal fungus isolated from an underground organ of this orchid. Although the seed germination rate was extremely low, subsequent growth from protocorm to flowering was induced in a medium containin...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0044-1
更新日期：2007-03-01 00:00:00
abstract：:Reduction of pollen flow can affect plant abundance and population viability and cause selection on plant mating system and floral traits. Little is known on the effect of this phenomenon in species naturally restricted to small and isolated habitats, that may have developed strategies to cope with long-term isolation...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-013-0588-9
更新日期：2014-01-01 00:00:00
abstract：:Carex (Cyperaceae) is one of the largest genera of the flowering plants, and comprises more than 2,000 species. In Carex, section Siderostictae with broader leaves distributed in East Asia is thought to be an ancestral group. We aimed to clarify the phylogenetic relationships and chromosomal variations within the sect...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-013-0578-y
更新日期：2014-01-01 00:00:00
abstract：:gamma-Aminobutyrate transaminase (GABA-T) catalyzes the conversion of GABA to succinic semialdehyde. Using differential display PCR and cDNA library screening, a full-length GABA-T cDNA (OsGABA-T) was isolated from rice (Oryza sativa) leaves infected with an incompatible race of Magnaporthe grisea. The deduced amino a...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0018-3
更新日期：2006-11-01 00:00:00
abstract：:A nuclear gene, FLOWERING LOCUS T (FT) homolog, was cloned from Phyllostachys meyeri as PmFT. Its putative copy number was estimated as four by Southern blot analysis, and the two copies were completely sequenced. Twenty-seven FT homolog sequences of bambusoid and early diverging grasses comprised 172-bp exons, and 35...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-008-0181-9
更新日期：2008-09-01 00:00:00
abstract：:Chloroplasts change their intracellular positions in response to their light environment. Under darkness, chloroplasts assume special positions that are different from those under light conditions. Here, we analyzed chloroplast dark positioning using Adiantum capillus-veneris gametophyte cells. When chloroplasts were ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-011-0433-y
更新日期：2012-03-01 00:00:00
abstract：:Sesuvium portulacastrum is a halophytic species well adapted to salinity and drought. In order to evaluate the physiological impact of salt on water deficit-induced stress response, we cultivated seedlings for 12 days, in the presence or absence of 100 mmol l(-1) NaCl, on a nutrient solution containing either 0 mmol l...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0056-x
更新日期：2007-03-01 00:00:00
