Abstract：
:The seminal root system of wheat (Triticum aestivum L.) is composed of the primary seminal root, the first pair of seminal roots, and the second pair of seminal roots, which are known to grow in different directions. The direction of root growth, which can be expressed by theta (the angle between the root and the plumb line) and phi (the angle between the root and a vertical plane including the primary seminal root), was studied with special attention to the latter. It was measured on seedlings grown in a small hemispherical soil-filled mesh basket. There were varietal differences in the phi of the first pair of roots (phi f) and in the phi of the second pair of roots (phi s). phi f and phi s were significantly correlated. The mean distance (MD), a measure to evaluate the efficiency of root spacing, was correlated with the difference between phi f and phi s. Neither experimentally applied low soil water potential nor the excision of the primary seminal root affected phi. When the grain was sown vertically with the tip of the embryo pointing downwards, it was found that the growth movement into a direction different from the plumb line and phi s was greatly modified. It is suggested that certain internal mechanisms, possibly involving gravitropic reactions, are operating to control the direction of root growth. The significance of root growth direction at the seedling stage is discussed.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Nakamoto T,Oyanagi Adoi
10.1007/BF02344552subject
Has Abstractpub_date
1996-12-01 00:00:00pages
375-80issue
1096eissn
0918-9440issn
1618-0860journal_volume
109pub_type
杂志文章abstract：:Approximately one-fourth of Japan's native plant species are threatened with extinction. To conserve these species, it is critical to evaluate genetic diversity at species-level and population-level. Some factors, including population size and geographic distribution, are known to influence the population genetic dive...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-003-0083-9
更新日期：2003-04-01 00:00:00
abstract：:Helwingia, a shrub or small tree of four species distributed in East Asia, has been assigned to various families, mainly Cornaceae. However, molecular analyses show that the genus belongs to its own family Helwingiaceae which is sister to Phyllonomaceae (Phyllonoma only) in the order Aquifoliales. On the basis of H. j...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-014-0672-9
更新日期：2015-01-01 00:00:00
abstract：:We discovered that some tree species have leaves whose adaxial sides show bright green-blue fluorescence upon exposure to ultraviolet irradiation. In total, 141 native Japanese species belonging to 47 families were analyzed, and the brightness of the leaf fluorescence, represented by the L* values (Lab color space) of...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0903-3
更新日期：2017-03-01 00:00:00
abstract：:A putative carbohydrate binding module (CBM) from strawberry (Fragaria × ananassa Duch.) expansin 2 (CBM-FaExp2) was cloned and the encoding protein was over-expressed in Escherichia coli and purified in order to evaluate its capacity to bind different cell wall polysaccharides "in vitro". The protein CBM-FaExp2 bound...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-012-0504-8
更新日期：2013-01-01 00:00:00
abstract：:Duckweed is a kind of floating aquatic plant and increasing its starch production is favorable for bioenergy. In this study, we found that starch biosynthesis was greatly promoted by the supplement of nickel ion (Ni2+) through the comparison of other different ions. The starch content in duckweed was increased by near...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-020-01204-0
更新日期：2020-07-01 00:00:00
abstract：:Phospholipase D (PLD) and its product phosphatidic acid (PA) are emerging as essential regulators of cytoskeleton organization in plants. However, the underlying molecular mechanisms of PA-mediated microtubule reorganization in plants remain largely unknown. In this study, we used pharmacological and genetic approache...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0870-8
更新日期：2017-01-01 00:00:00
abstract：:Plasmodesmata (PD) are intercellular connections in plants which play roles in various developmental processes. They are also found in brown algae, a group of eukaryotes possessing complex multicellularity, as well as green plants. Recently, we conducted an ultrastructural study of PD in several species of brown algae...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-014-0677-4
更新日期：2015-01-01 00:00:00
abstract：:Legumes engage in symbiosis with nitrogen-fixing soil bacteria, collectively called rhizobia, under nitrogen-limited conditions. In many legumes, the root invasion of rhizobia is mediated by infection threads (ITs), tubular invaginations of the host cell wall and plasma membrane, developed from infection foci of defor...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01122-w
更新日期：2019-09-01 00:00:00
abstract：:Two types of abnormal sporophytes were observed in a population of diploid Thelypteris decursive-pinnata. Most sporophytes in this population exhibited regular chromosome pairing, resulting in the formation of 30 bivalents in meiosis I; however, they produced abortive spores to various degrees. Some formed large globo...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-011-0461-7
更新日期：2012-07-01 00:00:00
abstract：:The PEND protein is a DNA-binding protein in the inner envelope membrane of the developing chloroplast. It consists of a short pre-sequence, an N-terminal DNA-binding domain (cbZIP), a central repeat domain, and a C-terminal transmembrane domain. PEND homologs have been detected in various angiosperms, including Arabi...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0200-z
更新日期：2005-04-01 00:00:00
abstract：:For plant cells in the early phases of water stress exposure, the genes induced under such conditions play a key role in detecting and responding to water deficit. In this study, potato cell suspensions were used as a simplified model system to dissect early molecular changes upon low water potential. In particular, t...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-012-0505-7
更新日期：2013-01-01 00:00:00
abstract：:We determined the complete nucleotide sequence of the plastid genome of the unicellular marine red alga Porphyridium purpureum strain NIES 2140, belonging to the unsequenced class Porphyridiophyceae. The genome is a circular DNA composed of 217,694 bp with the GC content of 30.3%. Twenty-nine of the 224 protein-coding...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-014-0627-1
更新日期：2014-05-01 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：:Calcium oxalate (CaOx) crystals in higher plants occur in five forms: raphides, styloids, prisms, druses, and crystal sand. CaOx crystals are formed in almost all tissues in intravacuolar crystal chambers. However, the mechanism of crystallization and the role of CaOx crystals have not been clearly explained. The aim ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0812-5
更新日期：2016-07-01 00:00:00
abstract：:Petal flavonoid compositions of 39 tree peony cultivars from Xibei (northwest China) were investigated in order to study the chemotaxonomic relationship among tree peony species. Six anthocyanins, the 3- O-glucosides and 3,5-di- O-glucosides of three anthocyanidins-pelargonidin (Pg), cyanidin (Cy), and peonidin (Pn)-e...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0130-6
更新日期：2004-02-01 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：: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：:It has been almost 30 years since RNA interference (RNAi) was shown to silence genes via double-stranded RNAs (dsRNAs) in Caenorhabditis elegans (Fire et al. 1998). 20-30-nucleotide (nt) small non-coding RNAs are a key element of the RNAi machinery. Recently, phased small interfering RNAs (phasiRNAs), small RNAs that ...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-016-0878-0
更新日期：2017-01-01 00:00:00
abstract：:The evolution of selfing from outcrossing ancestors is known to have occurred repeatedly in angiosperms. Theoretical studies have argued that the transition from outcrossing to selfing is accomplished more easily than the reverse case, and phylogenetic analyses involving self-compatible (SC) and self-incompatible (SI)...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-009-0245-5
更新日期：2009-09-01 00:00:00
abstract：:The physiological response of trees to drought is crucial for understanding the risk of mortality and its feedbacks to climate under the increase in droughts due to climate change, especially for the largest trees in tropical rainforests because of their large contribution to total carbon storage and water use. We det...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01161-3
更新日期：2020-03-01 00:00:00
abstract：:Microtubules are highly dynamic structures that control the spatiotemporal pattern of cell growth and division. Microtubule dynamics are regulated by reversible protein phosphorylation involving both protein kinases and phosphatases. Never in mitosis A (NIMA)-related kinases (NEKs) are a family of serine/threonine kin...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-015-0751-6
更新日期：2015-11-01 00:00:00
abstract：:Understanding how endophytic fungi mitigate abiotic stresses in plants will be important in a changing global climate. A few endophytes can produce phytohormones, but their ability to induce physiological changes in host plants during extreme environmental conditions are largely unexplored. In the present study, we in...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-014-0688-1
更新日期：2015-03-01 00:00:00
abstract：:Apogamous fern species are often difficult to distinguish from related species because of their continuous morphological variations. To clarify the genetic relationships among the members of the Dryopteris varia complex, we analyzed the nucleotide sequences of the plastid gene rbcL and the nuclear gene PgiC. We also a...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-014-0652-0
更新日期：2014-11-01 00:00:00
abstract：:Various photoreceptors in plants are used to monitor important environmental light signals and regulate plant development. Despite their functional importance, recent studies have demonstrated that red/far-red absorbing phytochromes or blue/UV-A absorbing cryptochromes are involved in local adaptation within a species...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-010-0361-2
更新日期：2011-01-01 00:00:00
abstract：:Morphological and molecular variation in Mitchella undulata Siebold et Zucc. was examined to evaluate the genetic basis for recognizing the dwarf variety, M. undulata var. minor Masamune. Considerable variation in leaf size in M. undulata, but no obvious morphological discontinuities, were found between the normal and...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0105-7
更新日期：2003-08-01 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：:The metazoan cell nucleus is physically supported by nuclear lamina structures, which are mainly composed of filamentous protein lamins. CROWDED NUCLEI (CRWNs)/nuclear matrix constituent proteins are considered potential candidates of lamin analogs in plants. CRWNs specifically localize to the nuclear periphery, maint...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-020-01184-1
更新日期：2020-07-01 00:00:00
abstract：:Cassava anthracnose disease (CAD), caused by the fungus Colletotrichum gloeosporioides f. sp. Manihotis, is a serious disease of cassava (Manihot esculenta) worldwide. In this study, we established a cassava oligonucleotide-DNA microarray representing 59,079 probes corresponding to approximately 30,000 genes based on ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0828-x
更新日期：2016-07-01 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：:Plants have developed certain adaptive responses to environmental stresses that cause adverse effects on growth. To identify genes involved in the adaptive mechanisms, we constructed a large population of transgenic Arabidopsis expressing rice full-length cDNAs, and performed gain-of-function screening under high-sali...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-012-0501-y
更新日期：2013-01-01 00:00:00
