Plant Morphology最新文献

{"title":"イネ（Oryza sativa L. ʻNipponbareʼ）葉身の葉肉細胞の三次元再構築像","authors":"崇生 大井, 浩二 山根, 光隆 谷口","doi":"10.5685/PLMORPHOL.32.0","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.32.0","url":null,"abstract":"","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123434149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"分裂準備帯（preprophase band）と細胞分裂面の確立","authors":"芳宣 峰雪","doi":"10.5685/PLMORPHOL.27.33","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.27.33","url":null,"abstract":"","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126600271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The maize coleoptiles do not perform typical C4 photosynthesis: investigation with special reference to anatomy, photosynthetic property, and gene expression","authors":"Y. Fukaya, N. Yoshioka, H. Sakakibara, C. Andreo, T. Mae, K. Yasuda, A. Sakai","doi":"10.5685/PLMORPHOL.24.111","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.24.111","url":null,"abstract":"","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124389317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imaging florigen distribution in vivo","authors":"Noriko Saihara, H. Tsuji","doi":"10.5685/PLMORPHOL.29.27","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.29.27","url":null,"abstract":"27 INTRODUCTION Florigen was postulated as a plant hormone that is produced in the leaves, transported to the shoot apical meristem (SAM), and induces floral transition (Figure 1) (Chailakhyan, 1936, Zeevaart 2006). The concept of florigen came from the finding of photoperiodic flowering (Garner and Allard 1920), where the seasonal cue for flowering response in plants depends on the measurement of day-length. Plants usually complete processes of flower formation with the advent of seasons suitable for reproduction or before coming seasons, which are not suitable for reproduction. Garner and Allard (1920) discovered that the environmental factor used by plants to predict the seasons is day length, from experiments that shift the time of transplanting of several crops and experiments using tobacco mutants. Actually, chrysanthemum and rice measure the changes in day length of 30 minutes and can reflect it to initiation of flowering (Itoh et al. 2010, Oda et al. 2012). The discovery of photoperiodism, which is a physiological reaction of organisms to measure the day-length as information to predict seasonal change, later spreads from the study of plant reproduction to that of seasonal behavior of animals. The plant organ that measures the changes in day-length is leaves, and when the suitable day-length is recognized this information is transported to the SAM where the floral organs are developed (Zeevaart 2006). This model was supported by the experiments where plants treated by inducible and non-inducible day length are grafted, and the stimulus that travels from leaves to the SAM was called as florigen. Recent advances in the molecular biology of flowering time control in plants revealed molecular identity of florigen, its receptors, and protein complexes that are essential for its function (Andres and Coupland 2012, Tsuji and Taoka 2014). Imaging techniques contributed to achieve these findings, through revealing dynamic changes of florigen protein complex inside a cell and florigen distribution around the SAM. MOLECULAR IDENTITY OF FLORIGEN Molecular identity of florigen was revealed from the efforts to identify genes that regulate the timing of flowering, through the genetic analysis of mutants for flowering time regulation in Arabidopsis thaliana, and quantitative trait loci (QTL) analysis of heading date in rice (Andres and Coupland 2012, Tsuji et al. 2013). FT in A. thaliana and Heading date 3a (Hd3a) in rice are genes identified through these studies, and these genes are orthologs that encode a protein similar to the phosphatidylehtanolamine binding protein (PEBP) in animals (Kardailsky et al. 1999, Kobayashi et al. 1999, Kojima et al. 2002). FT in A. thaliana plays an essential role to promote flowering in a long day. Mutation in FT attenuates promotion of flowering under long days, and the expression of FT is induced under long-day conditions in leaf phloem (Kardailsky et al. 1999, Kobayashi et al. 1999). Rice Hd3a gene was identified Pla","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123097191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Japanese term of preprophase bands","authors":"Y. Mineyuki","doi":"10.5685/PLMORPHOL.9.65","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.9.65","url":null,"abstract":"","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116672265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observation of meristematic cells in seedlings of higher plants using a high pressure freezing method","authors":"Y. Mineyuki, T. Murata, Thomashjr Giddlngs, L. Staehelin","doi":"10.5685/PLMORPHOL.10.30","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.10.30","url":null,"abstract":"We have employed high pressure freezing techniques to examine cytoskeletal and membrane structures in meristematic cells of plant seedlings. This method results in improved preservation of preprophase bands of microtubules as well as other structures in onion and tobacco roots and in meristematic cells of onion cotyledons. In this paper, we describe the use of high pressure freezing and freeze substitution to obtain thin sections of samples embedded in Spurr's resin and discuss problems with these procedures. We also present new results obtained from high pressure frozen cells and discuss the possible applications of high pressure freezing in plant cell biology.","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"325 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116680664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Behavior of mitochondria, chloroplast and pyrenoid in synchronized cells of Chlamydomonas and Euglena","authors":"T. Osafune","doi":"10.5685/PLMORPHOL.18.35","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.18.35","url":null,"abstract":"Summary: Giant mitochondria are temporarily formed, probably by fusion of smaller mitochondria, in Chlamydomonas reinhardi cells at an intermediate stage in the growth phase of the cell cycle. The formation of giant mitochondria is accompanied by a marked decrease in the oxygen-uptake activity of the cells and the division of giant mitochondria into smaller forms by a re-increase in the activity. Changes in the morphology of mitochondria of Euglena gracilis Z cells were also followed with an electron microscope during the cell cycle in a synchronous culture under photoautotrophic conditions. Giant mitochondria were temporarily formed, most probably by fusion of smaller forms, in the cells at an intermediate stage in the growth phase of the cell cycle. Furthermore, we found for the first time such phenomena in chloroplasts of Euglena gracilis Z, called?ggiant chloroplast?h, and we clarified their arrangement in the cell cycle. Changes in morphology of the pyrenoid and those in distribution of RuBisCO in chloroplasts were followed by immunoelectron microscopy during the growth and division phases of synchronized cells of Euglena.The immuno-reactive protein were densely localized in the pyrenoid, and thinly distributed in the stroma during the growth phase. During the division phase, the pyrenoid could not be detected and the gold particles were dispersed throughout the stroma. From a comparison of photosynthetic CO2-fixation with the total carboxylase activity of RuBisCO extracted from Euglena cells in the growth phase, it is suggested that the carboxylase in the pyrenoid functions in CO2-fixation in photosynthesis.","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127340681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contributions of Permineralized Plant Fossils to Plant Morphology","authors":"H. Nishida","doi":"10.5685/PLMORPHOL.16.93","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.16.93","url":null,"abstract":"Summary: Permineralization is a peculiar process of fossilization preserving anatomical details of plants of the Past, in some cases with a remarkable condition as represented by motile sperm in an Permian ovule. Here I introduce selected studies on permineralized plant remains emphasizing their importance in plant morphological studies to various extent. Ferns from the Eocene Princeton Chert Bed, Canada, Late Cretaceous plants from Japan, and a megasporangiate organ of Late Permian Glossopteris from Australia are mentioned.","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123240243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Autophagy and lipid homeostasis","authors":"M. Nakatogawa, H. Nakatogawa","doi":"10.5685/PLMORPHOL.30.25","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.30.25","url":null,"abstract":"Autophagy delivers not only cytoplasmic proteins and RNA but also various organelles, such as the endoplasmic reticulum, mitochondria, peroxisomes, and lipid droplets to lysosomes/vacuoles for degradation. Thus, a considerable amount of membrane lipids is also transported into lysosomes/vacuole via autophagy. However, little is known about degradation and recycling of lipids, and the mechanism and physiological significance of these processes, compared with those of proteins and RNA. In this review, we summarize our current knowledge on relationships between lipid metabolism and autophagy and discuss the involvement of autophagy in lipid homeostasis.","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123435452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Serial Block-Face SEM（SBF-SEM）による細胞小器官の3次元形態観察","authors":"直幸 宮崎, 和義 村田","doi":"10.5685/PLMORPHOL.27.9","DOIUrl":"https://doi.org/10.5685/PLMORPHOL.27.9","url":null,"abstract":"","PeriodicalId":279979,"journal":{"name":"Plant Morphology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125279334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}