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Journal of Plant Research

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https://read.qxmd.com/read/31037514/correction-to-sucrose-affects-the-developmental-transition-of-rhizomes-in-oryza-longistaminata
#1
Kanako Bessho-Uehara, Jovano Erris Nuguroho, Hirono Kondo, Rosalyn B Angeles Shim, Motoyuki Ashikari
The article Sucrose affects the developmental transition of rhizomes in Oryza longistaminata, written by Kanako Bessho-Uehara, Jovano Erris Nuguroho, Hirono Kondo, Rosalyn B. Angeles Shim, Motoyuki Ashikari, was originally published electronically on the publisher's internet portal (currently SpringerLink) on 8 May 2018 without open access.
April 29, 2019: Journal of Plant Research
https://read.qxmd.com/read/31020486/effects-of-light-conditions-on-growth-and-defense-compound-contents-of-datura-inoxia-and-d-stramonium
#2
Itsuka Hirano, Hitomi Iida, Yasuaki Ito, Ho-Dong Park, Koichi Takahashi
We examined the effects of light conditions on plant growth and production of defense compounds in the toxic species Datura inoxia and D. stramonium. Specifically, we investigated morphological and physiological traits, including the contents of nitrogen-based tropane alkaloids (atropine and scopolamine) as defense compounds, under three light conditions: 100%, 80%, and 50% of full sunlight. Both species showed similar morphological and physiological responses to exposure to different intensities of light. Although the total plant mass decreased under lower light conditions, the total leaf area per plant increased...
April 24, 2019: Journal of Plant Research
https://read.qxmd.com/read/31006042/germination-niches-and-seed-persistence-of-tropical-epiphytic-orchids-in-an-urban-landscape
#3
Muhammad Izuddin, Tim Wing Yam, Edward L Webb
Urbanisation has contributed to significant biodiversity loss, yet, urban areas can facilitate biodiversity conservation. For instance, there is evidence of urban trees supporting natural establishments of orchids, the most species-rich plant family on Earth. However, the germination niches-which include both suitable biophysical conditions and orchid mycorrhizal fungus/fungi (OMF)-are not sufficiently known for most species, especially tropical epiphytic orchids. The fate of their dispersed seeds is poorly understood as well...
April 20, 2019: Journal of Plant Research
https://read.qxmd.com/read/31004242/theoretical-models-for-branch-formation-in-plants
#4
Akiko Nakamasu, Takumi Higaki
Various branch architectures are observed in living organisms including plants. Branch formation has traditionally been an area of interest in the field of developmental biology, and theoretical approaches are now commonly used to understand the complex mechanisms involved. In this review article, we provide an overview of theoretical approaches including mathematical models and computer simulations for studying plant branch formation. These approaches cover a wide range of topics. In particular, we focus on the importance of positional information in branch formation, which has been especially revealed by theoretical research in plants including computations of developmental processes...
April 19, 2019: Journal of Plant Research
https://read.qxmd.com/read/30993555/plant-defense-factors-involved-in-olea-europaea-resistance-against-xylella-fastidiosa-infection
#5
Silvia Novelli, Angelo Gismondi, Gabriele Di Marco, Lorena Canuti, Valentina Nanni, Antonella Canini
Olive quick decline syndrome (OQDS) is a dangerous plant disease, caused by the bacterium Xylella fastidiosa, which targets olive (Olea europaea). Since field observations suggested that some olive cultivars (i.e. Leccino) were more resistant to OQDS than others (i.e. Cellina di Nardò), the plant defense strategies adopted by olive to contrast X. fastidiosa infection were investigated. In the present study, ELISA and genetic approaches were used to confirm plant infection, while microbial colonization mechanism and distribution in host plant tissues and reactive oxygen species (ROS) levels were examined by light, scanning electron and confocal microscopy analyses...
April 16, 2019: Journal of Plant Research
https://read.qxmd.com/read/30993554/molecular-phylogenetic-species-delimitation-in-the-aquatic-genus-ottelia-hydrocharitaceae-reveals-cryptic-diversity-within-a-widespread-species
#6
Yu Ito, Norio Tanaka, Anders S Barfod, Josef Bogner, Jie Li, Okihito Yano, Stephan W Gale
Ottelia, a pantropical genus of aquatic plants belonging to the family Hydrocharitaceae, includes several narrowly distributed taxa in Asia. Although the Asian species have received comparatively more research attention than congeners in other areas, various key taxonomic questions remain unaddressed, especially with regards to apparent cryptic diversity within O. alismoides, a widespread species complex native to Asia, northern Australia and tropical Africa. Here we test taxonomic concepts and evaluate species boundaries using a phylogenetic framework...
April 16, 2019: Journal of Plant Research
https://read.qxmd.com/read/30989500/leaf-structural-and-hydraulic-adjustment-with-respect-to-air-humidity-and-canopy-position-in-silver-birch-betula-pendula
#7
Arne Sellin, Haruhiko Taneda, Meeli Alber
Climate change scenarios predict an increase in air temperature and precipitation in northern temperate regions of Europe by the end of the century. Increasing atmospheric humidity inevitably resulting from more frequent rainfall events reduces water flux through vegetation, influencing plants' structure and functioning. We investigated the extent to which artificially elevated air humidity affects the anatomical structure of the vascular system and hydraulic conductance of leaves in Betula pendula. A field experiment was carried out at the Free Air Humidity Manipulation (FAHM) site with a mean increase in relative air humidity (RH) by 7% over the ambient level across the growing period...
April 15, 2019: Journal of Plant Research
https://read.qxmd.com/read/30980217/interaction-of-livestock-grazing-and-rainfall-manipulation-enhances-herbaceous-species-diversity-and-aboveground-biomass-in-a-humid-savanna
#8
Daniel Osieko Okach, Joseph O Ondier, Gerhard Rambold, John Tenhunen, Bernd Huwe, Eun Young Jung, Dennis O Otieno
Understanding of the interaction of livestock grazing and rainfall variability may aid in predicting the patterns of herbaceous species diversity and biomass production. We manipulated the amount of ambient rainfall received in grazed and ungrazed savanna in Lambwe Valley-Kenya. The combined influence of livestock grazing and rainfall on soil moisture, herbaceous species diversity, and aboveground biomass patterns was assessed. We used the number of species (S), Margalef's richness index (Dmg ), Shannon index of diversity (H), and Pileou's index of evenness (J) to analyze the herbaceous community structure...
April 12, 2019: Journal of Plant Research
https://read.qxmd.com/read/30980216/absorbance-spectra-of-the-hematochrome-like-granules-and-eyespot-of-euglena-gracilis-by-scan-free-absorbance-spectral-imaging-a-x-y-%C3%AE-within-the-live-cells
#9
Kyohei Yamashita, Takafumi Yagi, Takumi Isono, Yusuke Nishiyama, Masafumi Hashimoto, Koji Yamada, Kengo Suzuki, Eiji Tokunaga
Euglena gracilis has an organelle resembling hematochrome, with an appearance similar to the eyespot and the absorption band spectrally overlapped with that of the carotenoid. To discriminate the hematochrome-like granules and eyespot, scan-free, non-invasive, absorbance spectral imaging A(x, y, λ) microscopy of single live cells, where A(x, y, λ) means absorbance at a position (x, y) on a two-dimensional image at a specific wavelength λ was applied. This technique was demonstrated to be a powerful tool for basic research on intracellular structural analysis...
April 12, 2019: Journal of Plant Research
https://read.qxmd.com/read/30972685/differentiation-of-germination-characteristics-in-scutellaria-rubropunctata-lamiaceae-associated-with-adaptation-to-rheophytic-habitats-in-the-subtropical-ryukyu-islands-of-japan
#10
Hikaru Yoshimura, Shogo Arakaki, Mikoto Hamagawa, Yoshio Kitamura, Masatsugu Yokota, Tetsuo Denda
Seed germination characteristics of a facultative rheophyte Scutellaria rubropunctata, a perennial skullcap endemic to the subtropical Ryukyu Islands of Japan, were investigated at temperatures of 15 °C, 20 °C, 25 °C, and 30 °C. The rheophytic type of S. rubropunctata showed relatively simultaneous germination times and reached high germination rates under all temperatures tested. This characteristic may allow it to establish quickly without being influenced by temperature, giving a survival advantage in rheophytic habitats by avoiding seeds being washed away by the rising water...
April 10, 2019: Journal of Plant Research
https://read.qxmd.com/read/30957193/correction-to-why-is-chlorophyll-b-only-used-in-light-harvesting-systems
#11
Atsushi Kume, Tomoko Akitsu, Kenlo Nishida Nasahara
The article Why is chlorophyll b only used in light-harvesting systems.
April 7, 2019: Journal of Plant Research
https://read.qxmd.com/read/30919220/toward-a-multifaceted-understanding-of-plants-adaptation-mechanisms
#12
EDITORIAL
Michitaro Shibata, Junro Mogami
No abstract text is available yet for this article.
March 27, 2019: Journal of Plant Research
https://read.qxmd.com/read/30903398/comparative-transcriptomic-analysis-reveal-the-regulation-mechanism-underlying-meja-induced-accumulation-of-alkaloids-in-dendrobium-officinale
#13
Yue Chen, Yunzhu Wang, Ping Lyu, Liping Chen, Chenjia Shen, Chongbo Sun
Dendrobium officinale is a traditional medicinal herb with a variety of bioactive components. Alkaloid is one of the major active ingredients of Dendrobium plants, and its immune regulatory effects have been well-studied. Although a number of genes involved in the biosynthetic pathway of alkaloids have been elucidated, the regulation mechanism underlying the methyl-jasmonate (MeJA)-induced accumulation of alkaloids in D. officinale is largely unknown. In our study, a total of 4,857 DEGs, including 2,943 up- and 1,932 down-regulated genes, were identified between the control and MeJA-treated groups...
March 22, 2019: Journal of Plant Research
https://read.qxmd.com/read/30903397/a-gene-regulatory-network-for-root-hair-development
#14
Michitaro Shibata, Keiko Sugimoto
Root hairs play important roles for the acquisition of nutrients, microbe interaction and plant anchorage. In addition, root hairs provide an excellent model system to study cell patterning, differentiation and growth. Arabidopsis root hairs have been thoroughly studied to understand how plants regulate cell fate and growth in response to environmental signals. Accumulating evidence suggests that a multi-layered gene regulatory network is the molecular secret to enable the flexible and adequate response to multiple signals...
March 22, 2019: Journal of Plant Research
https://read.qxmd.com/read/30864048/polyamines-levels-increase-in-smut-teliospores-after-contact-with-sugarcane-glycoproteins-as-a-plant-defensive-mechanism
#15
Elena Sánchez-Elordi, Laura Morales de Los Ríos, Carlos Vicente, María-Estrella Legaz
Previous studies have already highlighted the correlation between Sporisorium scitamineum pathogenicity and sugarcane polyamine accumulation. It was shown that high infectivity correlates with an increase in the amount of spermidine, spermine and cadaverine conjugated to phenols in the sensitive cultivars whereas resistant plants mainly produce free putrescine. However, these previous studies did not clarify the role of these polyamides in the disorders caused to the plant. Therefore, the purpose of this research is to clarify the effect of polyamines on the development of smut disease...
March 12, 2019: Journal of Plant Research
https://read.qxmd.com/read/30847615/heat-and-chilling-stress-induce-nucleolus-morphological-changes
#16
Kohma Hayashi, Sachihiro Matsunaga
The nucleolus, where components of the ribosome are constructed, is known to play an important role in various stress responses in animals. However, little is known about the role of the plant nucleolus under environmental stresses such as heat and chilling stress. In this study, we analyzed nucleolus morphology by determining the distribution of newly synthesized rRNAs with an analog of uridine, 5-ethynyl uridine (EU). When EU was incorporated into the root of the Arabidopsis thaliana, EU signals were strongly localized in the nucleolus...
March 7, 2019: Journal of Plant Research
https://read.qxmd.com/read/30840210/a-new-species-of-liquidambar-altingiaceae-from-the-late-eocene-of-south-china
#17
Natalia P Maslova, Tatiana M Kodrul, Alexei B Herman, Ming Tu, Xiaoyan Liu, Jianhua Jin
A new fossil leaf species, Liquidambar bella (Altingiaceae), is described from the lower part of the Eocene Huangniuling Formation, Maoming Basin, South China. Suprabasal venation in the fossil lobed Liquidambar leaves is reported for the first time. The new species provides additional palaeobotanical evidence on the morphological variability of this genus supporting the idea of combining the genera Liquidambar, Semiliquidambar and Altingia into the single genus Liquidambar as proposed based on molecular markers...
March 6, 2019: Journal of Plant Research
https://read.qxmd.com/read/30840209/genome-wide-analysis-of-mpbhlh12-a-iiif-basic-helix-loop-helix-transcription-factor-of-marchantia-polymorpha
#18
Haruka Arai, Kazuya Yanagiura, Yuko Toyama, Kengo Morohashi
The evolution of plants on land required adaptation to UV radiation and dry environments, and involved the appearance and/or rewiring of genetic connections, known as gene regulatory networks (GRNs), which consist of one or more transcription factors (TFs). The liverwort, Marchantia polymorpha, is a basal land plant, with a recently sequenced genome. The number of genes encoding basic helix-loop-helix (bHLH) family members is considerably higher in M. polymorpha than in charophyte green algae, suggesting the contribution of bHLH proteins to the evolution of GRNs associated with the adaptation of plants to land...
March 6, 2019: Journal of Plant Research
https://read.qxmd.com/read/30825069/towards-a-next-step-of-the-research-of-regulatory-networks-in-plant-growth-and-development
#19
EDITORIAL
Kengo Morohashi, Eugenia Russinova
No abstract text is available yet for this article.
March 1, 2019: Journal of Plant Research
https://read.qxmd.com/read/30805737/correction-to-the-cellular-machineries-responsible-for-the-division-of-endosymbiotic-organelles
#20
Yamato Yoshida
The article The cellular machineries responsible for the division of endosymbiotic organelles, written by Yamato Yoshida was originally published electronically on the publisher's internet portal (currently SpringerLink) on 12 June 2018 without open access.
February 25, 2019: Journal of Plant Research
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