著者
大久保 直美
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.53, no.1, pp.60-65, 2018 (Released:2018-06-22)
参考文献数
6

Oriental hybrid lily flowers have a nice fragrance. Especially in a confined space, however, the scent can be perceived as too strong and therefore unpleasant. Lilium cv. ‘Casa Blanca’, a typical oriental hybrid cultivar, has a large pure-white flower with strong smell. We clarified that the compounds responsible for the strong fragrance of ‘Casa Blanca’ are aromatics. We succeeded in decreasing the emissions of scent compounds and made the fragrance milder throughout the period of use as an ornamental by application of an inhibitor of PAL. Here I introduce the characteristics of floral scents, the scent suppression method of lily and the outline of development of fragrance suppressor for ornamental flower.
著者
児玉 豊
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.54, no.1, pp.44-48, 2019 (Released:2019-06-26)
参考文献数
12

Chloroplasts change their intracellular position in response to environmental alterations. What is being most studied is the relocation induced by light. For example, chloroplasts move towards weak light, maximizing photosynthesis. However, when ambient temperature decreases, chloroplasts escape from the weak light. We call the cold-induced phenomenon “the chloroplast cold-avoidance response”. In this review, I would like to summarize the findings on the chloroplast cold-avoidance response during the past over 100 years, and also propose a new hypothesis on biological thermosensing.
著者
朽名 夏麿 長谷川 淳子 松永 幸大
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.49, no.2, pp.104-111, 2014-12-20 (Released:2017-09-29)
参考文献数
38

Live imaging was brought about by recent development of fluorescent proteins and innovation of imaging systems. Dynamic analyses of organelle through live imaging reveal the subcellular dynamic function and the spatiotemporally four-dimensional structure. At the same time, quantitative analyses in addition to qualitative analyses become more important in analyses of the huge imaging data. Thus, we introduce our recent works in live imaging of mitochondria, nuclei, vacuolar membrane, and actin filaments in plant cells with our observation skills. Moreover, quantitative analyses of live imaging data were classified into three categories, number, morphology and distribution, three dimensional shape or dynamics. We review these three quantitative analyses.
著者
岡本 龍史 戸田 絵梨香 加藤 紀夫
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.55, no.1, pp.52-56, 2020 (Released:2021-07-01)
参考文献数
29

Technology involving the targeted mutagenesis of plants using programmable nucleases has been developing rapidly and has enormous potential in next-generation plant breeding. Its application has been hindered in many cases, however, due to technical hurdles, such as the low delivery rate of macromolecules into plant cells or tissues and difficulties in plant transformation and regeneration. Here, we report a genome-editing system via PEG-Ca2+-mediated transfection of rice zygotes, produced by in vitro fertilization of isolated rice gametes. Cas9-gRNA ribonucleoprotein complexes(RNPs), were transfected into zygotes, resulting in the regeneration of plants with a high frequency of targeted mutations, in the range of 14-64%. This novel and efficient plant genome-editing system has enormous potential for the improvement of rice, as well as other important crop species.
著者
山根 久和 横田 孝雄 浅見 忠男
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.48, no.1, pp.79-92, 2013-05-31 (Released:2017-09-29)
参考文献数
103

Plant hormones regulate various aspects of the growth and development of plants. Perception and signaling of plant hormones are highly sophisticated, but have been increasingly clarified by biochemical and molecular techniques. Recently, chemical genetics is becoming a more powerful approach to elucidate hormone actions, where plant hormone agonists and antagonists as well as biosynthesis inhibitors are utilized. In this review, we give an overview of plant hormone agonists and antagonists which have been or can be used for elucidation of plant hormone actions. Some successful chemical genetic studies are also introduced.
著者
葛西 厚史 原田 竹雄 山崎 宗郎 田部井 豊 赤田 辰治
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.54, no.1, pp.71-76, 2019

<p>The plant phloem system transports both essential nutrients and long-distance signaling agents. Recent transcriptomics studies and grafting experiments have demonstrated that several thousand mRNAs and various small noncoding RNAs are moved over long-distances via the phloem. Therefore, by using grafting, it is possible to deliver artificial RNAs which are derived from a designed DNA construct in the transgenic plant into the graft partner plant, and to induce heritable TGS (transcriptional gene silencing) via RdDM (RNA directed DNA Methylation). We developed an epigenome editing system of an endogenous gene of potato (<i>Solanum tuberosum</i>). We address potential function of siRNA(small interfering RNA) in grafting system with respect to epigenetic breeding.</p>
著者
吉田 理一郎
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.54, no.1, pp.26-32, 2019 (Released:2019-06-26)
参考文献数
47
被引用文献数
1

Amino acids, an essential component that constitutes proteins in vivo, are also known to play as a signaling molecule that regulates various physiological functions in the living organism. Ionotropic glutamate receptors (iGluRs) are ligand-gated channels that specifically transmit amino acid signals in the central nervous system. Surprisingly, homologs of iGluRs, known as glutamate receptor-like channels (GLRs), were also found in higher plant genomes. However, their physiological roles or molecular functions are still obscure. Here, I review the latest research of plant GLRs and discuss their roles in plant signaling including environmental adaptation and cell-to-cell communications.
著者
野田 尚信
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.54, no.1, pp.33-38, 2019 (Released:2019-06-26)
参考文献数
45

Various studies on flavonoid pigments related to the color development of blue flowers and their biosynthetic genes have been conducted for over 100 years. Today, molecular breeding of blue flowers has become possible via the genetic manipulation of the pigment biosynthetic pathway present in some flowers. Recently, blue transgenic chrysanthemums have been successfully generated by synthesizing artificial anthocyanins that interact with endogenous flavonoids. In this review, I will describe and discuss the recent advances in blue-flower color breeding and the blue coloration mechanisms that help generate blue transgenic chrysanthemums.
著者
宮澤 日子太 山谷 紘子 川口 正代司
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.46, no.2, pp.120-127, 2011-12-20 (Released:2017-09-29)
参考文献数
64

In the endosymbiosis with nitrogen-fixing bacteria, rhizobia, legume plants form lateral organs called nodules on their roots. Although this symbiosis gives legumes an advantage in surviving on the land with limited nitrogen, nodule development associated with cell division and nitrogen-fixation cost appreciable amounts of morphological and metabolic energy. To keep the balance of symbiosis and homeostasis, the number of nodules is regulated by host plants. Nodules developed at early stage suppress nodule formation at later stage. This systemic negative regulation of nodule formation has been termed autoregulation of nodulation (AON). One of most important mechanisms of AON involves long-distance signaling via shoot-functioning receptor-like kinases and proteins (RLKs and RLPs) such as HAR1, KLV and LjCLV2 in Lotus japonicus, SUNN in Medicago truncatula, NARK in Glycine max, and SYM29, PsCLV2 in Pea sativum. These RLKs and RLPs have high homologies with other RLKs that regulate stem cell proliferation in shoot apical meristem in non-legume plants, indicating similarity and functional divergence of molecular mechanisms between the regulation of nodulation in legumes and the regulation of shoot apical meristem in non-legume plants. Based on recent studies, the following model is proposed to explain AON. First, several CLE peptides are induced by rhizobial infection or nitrogen compounds and function as root-derived signals (RDS). RDSs are transported to shoot and perceived by shoot-functioning RLKs and RLPs. Then the signals are converted into shoot-derived signals (SDS) and SDSs are in turn transported to root to suppress further nodulation.
著者
中林 亮 吉岡 武雄 泉川 智子 藤岡 昭三 木村 靖夫
出版者
一般社団法人 植物化学調節学会
雑誌
植物化学調節学会 研究発表記録集 (ISSN:09191887)
巻号頁・発行日
vol.40, pp.55, 2005-10-13 (Released:2018-02-15)

Ailanthus altissima has been known to be allelopathic plant since no plant can grow under the tree. Heisey et al (1990) showed that crude extracts of root and stem bark of A. altissima exhibited strong herbicidal activity. We confirmed plant growth inhibitors against Lactuca sativa in the aqueous extract of A. altissima bark. The compound was isolated and identified to be ailanthone known as quassinoid or allelopathic substance. Here, we report plant growth activities of ailanthone against Lactuca sativa, Pariucam crus-galli, Raphanus sativa L. and Daucus cavota L. in detail.
著者
吉村 麻美 塚谷 裕一
出版者
一般社団法人 植物化学調節学会
雑誌
植物の生長調節 (ISSN:13465406)
巻号頁・発行日
vol.48, no.1, pp.60-66, 2013
参考文献数
19

ROTUNDIFOLIA4 (ROT4) is a peptide unique to land plants. Angiosperm species have more than 10 paralogs (RTFL/DVLs) in their genome and the high redundancy is an obstacle to know the detailed function of this peptide family. The discovery of this peptide family was based on two indepdendent activation-tagging screenings in Arabidopsis thaliana for two different aims. First it was thought that the RTFL/DVL is involved in cell proliferative activity along the longitudinal axis of leaves because the over-expression of the members of RTFL/DVL causes stunted leaves. Our recent detailed analysis suggested that the ROT4 is involved in determination of longitudinal positional cues in lateral organs/tissues. Curiously, GFP-fused version of the ROT4 is localized on the plasma membrane, although the ROT4 itself has no special known motif. Here we overview the history of our understanding of the enigmatic RTFL/DVL family.