Explanipedia

Determination of the phloem transport pathways and destination of photosynthates in soybean using autoradiography and fluorescent tracer imaging Open

Ai Kaiho-Soma, Yuko Kurita, Natsuko I. Kobayashi, Tomoko Nakanishi, Keitaro Tanoi · 2025

Vascular tissues transport water and nutrients in plants, with the phloem distributing photosynthates from source to sink. The direction of phloem transport is determined by the positional relationship between sources and sinks and by vasc…

Chelation-based iron uptake mitigates the effects of prolonged high-temperature stress in cool-season grasses Open

Anzu Minami, Yoshihiko Onda, Minami Shimizu, Yukiko Uehara‐Yamaguchi, Asaka Kanatani , et al. · 2025

Comparative genomics and transcriptomics on salt tolerance of Vigna luteola Open

Yurie Iki, Fanmiao Wang, Kosuke Ito, Takanori Wakatake, Keitaro Tanoi , et al. · 2025

Vigna luteola , a wild legume species, shows remarkable variation in salinity tolerance across its natural habitats, with coastal populations exhibiting high tolerance and riverbank populations being sensitive. This intraspecific variation…

Autophagy is induced during plant grafting to promote wound healing Open

Ken‐ichi Kurotani, Daiki Shinozaki, Kentaro Okada, Ryo Tabata, Yaichi Kawakatsu , et al. · 2025

Grafting is an agricultural technique that joins tissues from different plants to obtain useful rootstock traits. However, cellular processes involved in joint tissue repair remain poorly understood. We analyzed Nicotiana benthamiana (Nb) …

Comparative Analysis of the Translocation of [14C]CO2-Derived Photosynthetic Products and Foliar-Applied [14C]-Sucrose in Soybean Open

Ai Kaiho-Soma, Ryohei Sugita, Yuko Kurita, Natsuko I. Kobayashi, Tomoko Nakanishi , et al. · 2025

Determination of the Phloem Path and Destination of the Photosynthates by Autoradiography and Fluorescent Marker Imaging Open

Ai Kaiho-Soma, Yuko Kurita, Natsuko I. Kobayashi, Tomoko Nakanishi, Keitaro Tanoi · 2024

Vascular bundle connectivity, which is closely associated with phyllotaxis, plays a crucial role in determine the destination of photosynthates. The correlation between vascular connections and phosphate distribution has been studied in so…

Multi-layered apoplastic barrier underlying the ability of Na+exclusion inVigna marina Open

Fanmiao Wang, Keitaro Tanoi, Takaki Yamauchi, Ken Naito · 2024

Summary Salt tolerance is important to tackle problems of soil salinization and ground water depletion. However, developing salt tolerant crops is facing difficulties due to limited potential in model plants and crop species. Thus, it is i…

Cadmium accumulation dynamics in the rice endosperm during grain filling revealed by autoradiography Open

Atsushi Hirose, Keitaro Tanoi, Tomoko Nakanishi, Natsuko I. Kobayashi · 2024

Cadmium (Cd) is one of the environmental pollutants contaminated in our food. Several previous reports showed that rice polishing cannot be efficient to reduce Cd content in white rice, implying the characteristic Cd distribution in rice g…

Development of the Experimental Method to Evaluate Sodium Ion Exclusion in the Mature Root Zone of Arabidopsis thaliana Open

Tomoki Nagata, Mio Nagoya, Takaaki Ogura, Yuko Kurita, Natsuko I. Kobayashi , et al. · 2023

Sodium (Na) exclusion is vital for plants to cope with salt stress, and the plasma membrane Na+/H+ antiporter, SALT OVERLY SENSITIVE 1 (SOS1), has been known to play a central role in this process although the function of this molecule is …

A fungal sesquiterpene biosynthesis gene cluster critical for mutualist-pathogen transition in Colletotrichum tofieldiae Open

Kei Hiruma, Seishiro Aoki, Junya Takino, Takeshi Higa, Yuniar Devi Utami , et al. · 2023

Plant-associated fungi show diverse lifestyles from pathogenic to mutualistic to the host; however, the principles and mechanisms through which they shift the lifestyles require elucidation. The root fungus Colletotrichum tofieldiae (Ct) p…

Phosphate starvation response precedes abscisic acid response under progressive mild drought in plants Open

Yukari Nagatoshi, Kenta Ikazaki, Yasufumi Kobayashi, Nobuyuki Mizuno, Ryohei Sugita , et al. · 2023

Drought severely damages crop production, even under conditions so mild that the leaves show no signs of wilting. However, it is unclear how field-grown plants respond to mild drought. Here, we show through six years of field trials that r…

Starch-dependent sodium accumulation in the leaves of Vigna riukiuensis Open

Yusaku Noda, Atsushi Hirose, Mayumi Wakazaki, Mayuko Sato, Kiminori Toyooka , et al. · 2023

This research provides insight into a unique salt tolerance mechanism of Vigna riukiuensis . V. riukiuensis is one of the salt-tolerant species identified from the genus Vigna . We have previously reported that V. riukiuensis accumulates a…

Different phenotypic responses in the root of Vigna marina and Vigna luteola under salt stress Open

Fanmiao Wang, Yurie Iki, Keitaro Tanoi, Ken Naito · 2023

Some wild species in vigna genus are halophyte that have high potential in salt tolerance. V. marina and one accession of V. luteola have been previously identified as salt tolerant. However, the mechanisms remain elusive and studies on th…

Nicotiana benthamiana XYLEM CYSTEINE PROTEASEgenes facilitate tracheary element formation in interfamily grafting Open

Chaokun Huang, Ken‐ichi Kurotani, Ryo Tabata, Nobutaka Mitsuda, Ryohei Sugita , et al. · 2023

Grafting is a plant propagation technique widely used in agriculture. A recent discovery of the capability of interfamily grafting in Nicotiana has expanded the potential combinations of grafting. In this study, we showed that xylem connec…

Starch-dependent sodium accumulation in the leaves of Vigna riukiuensis. Open

Yusaku Noda, Atsushi Hirose, Mayumi Wakazaki, Mayuko Sato, Kiminori Toyooka , et al. · 2023

This research provides insight into a unique salt tolerance mechanism of Vigna riukiuensis. V. riukiuensis is one of the great genetic resources of salt tolerance. We have previously reported that V. riukiuensis accumulates a higher amount…

Aerial roots of the leafless epiphytic orchid Taeniophyllum are specialized for performing crassulacean acid metabolism photosynthesis Open

Kenji Suetsugu, Ryohei Sugita, Akiko Yoshihara, Hidehito Okada, Kae Akita , et al. · 2023

Orchidaceae is one of the most diverse families of flowering plants, with > 28 000 known species distributed among 763 genera (Christenhusz & Byng, 2016). The impressive diversity of orchids is partly linked to their epiphytic habits, whic…

Mutations in RZF1, a zinc-finger protein, reduce magnesium uptake in roots and translocation to shoots in rice Open

Natsuko I. Kobayashi, Hiroki Takagi, Xiaoyu Yang, Ayako Nishizawa‐Yokoi, Tenta Segawa , et al. · 2023

Magnesium (Mg) homeostasis is critical for maintaining many biological processes, but little information is available to comprehend the molecular mechanisms regulating Mg concentration in rice (Oryza sativa). To make up for the lack of inf…

Challenge to Resume Production of Mushroom Bed Logs by Potassium Fertilizer Application Open

Masaya Masumori, Natsuko I. Kobayashi, Keitaro Tanoi, Naoto Nihei, Satoru Miura , et al. · 2023

In order to resume production of mushroom bed logs in a forested area where radiocesium was deposited, it is important to reduce its absorption from the soil. In this study, we found that aggregated transfer factors of radiocesium in Konar…

Candidates for Breeding Target Genes Related to Cesium Transport in Plants After the Fukushima Daiichi Nuclear Power Plant Accident Open

Keitaro Tanoi · 2023

In this chapter, I summarize the knowledge about Cs + transport genes in plants, which would be potential candidates for breeding targets of low-Cs crops. After the Fukushima Daiichi Nuclear Power Plant accident, vigorous studies about Cs …

Agricultural Implications of Fukushima Nuclear Accident (IV) Open

Tomoko M. Nakanishi, Keitaro Tanoi · 2023

This open access book presents the findings from on-site research into radioactive cesium contamination in various agricultural systems affected by the Fukushima Daiichi Nuclear Power Plant accident in March 2011. This fourth volume in the…

Effect of Exchangeable and Nonexchangeable Potassium in Soil on Cesium Uptake by Quercus serrata Seedlings Open

Riona Kobayashi, Masaya Masumori, Takeshi Tange, Keitaro Tanoi, Natsuko I. Kobayashi , et al. · 2023

In general, potassium in soil greatly reduces radiocesium uptake by plants. Using four extraction methods, we investigated forms of potassium retained in soils from Quercus serrata (Konara oak) forests in nine regions across Japan to inves…

Nicotiana benthamiana XYLEM CYSTEINE PROTEASEgenes facilitate tracheary element formation in interfamily grafting Open

Chaokun Huang, Ken‐ichi Kurotani, Ryo Tabata, Nobutaka Mitsuda, Ryohei Sugita , et al. · 2022

Grafting is a plant propagation technique widely used in agriculture. A recent discovery of the capability of interfamily grafting in Nicotiana has expanded the potential combinations of grafting. In this study, we showed that xylem connec…

植物における低マグネシウム環境での生存戦略とは Open

Natsuko I. Kobayashi, Keitaro Tanoi · 2022

Development of the Practical Method for Ion Influx, Efflux, and Net Flux Measurement in Plant Roots Open

Natsuko I. Kobayashi, Xiaoyu Yang, Ren Iwata, Hisashi Suzuki, Tomoko Nakanishi , et al. · 2022

Tracer experiments using radioisotope are powerful for the analysis of mineral uptake mechanisms in plant roots. In this study, we aimed to establish a quantitative method for measuring ion fluxes, i.e. net flux, influx, and efflux, which …

A fungal secondary metabolism gene cluster enables mutualist-pathogen transition in root endophyteColletotrichum tofieldiae Open

Kei Hiruma, Seishirō Aoki, Yuniar Devi Utami, Masanori Okamoto, Nanami Kawamura , et al. · 2022

SUMMARY Plant-associated fungi show diverse lifestyles from pathogenic to mutualistic to the host; however, the principles and mechanisms through which they shift the lifestyles require elucidation. The root fungus Colletotrichum tofieldia…

Mutations in OsRZF1, encoding a zinc-finger protein, causes reduced magnesium uptake in roots and translocation to shoots in rice Open

Natsuko I. Kobayashi, Hiroki Takagi, Xiaoyu Yang, Ayako Nishizawa‐Yokoi, Tatsuaki Hoshina , et al. · 2022

Magnesium (Mg) homeostasis is critical for maintaining many biological processes, but little information is available to comprehend the molecular mechanisms regulating Mg concentration in rice (Oryza sativa). To make up for the lack of inf…

Cover Image Open

Yuko Kurita, Satomi Kanno, Ryohei Sugita, Atsushi Hirose, Miwa Ohnishi , et al. · 2022

The front cover image is based on the Original Article Visualization of phosphorus re-translocation and phosphate transporter expression profiles in a shortened annual cycle system of poplar by Yuko Kurita et al., https://doi.org/10.1111/p…

Mutagenesis Analysis of GMN Motif in Arabidopsis thaliana Mg2+ Transporter MRS2-1 Open

Xiaoyu Yang, Natsuko I. Kobayashi, Yoshiki Hayashi, Koichi Ito, Yoshitaka Moriwaki , et al. · 2022

Magnesium is an important nutrient for plants, but much is still unknown about plant Mg2+ transporters. Combining with the structural prediction of AlphaFold2, we used mutagenesis and 28Mg uptake assay to study the highly conserved “GMN” m…

Isotope-based visualization of element distribution in phloem provides functional evidence for the operation of SOS1 Na+/H+ exchangers in mature zones of Arabidopsis root Open

Ryohei Sugita, Takaaki Ogura, Natsuko I. Kobayashi, Muhammad Bilal Gill, Lana Shabala , et al. · 2022

In the phloem, various solutes such as photosynthates, mineral nutrients, or toxic elements move from the source organs to sinks. One of them is the root. While this process may mediate significant quantities of solutes delivered to the ro…

Systemic Regulation of Iron Acquisition by Arabidopsis in Environments with Heterogeneous Iron Distributions Open

Ryo Tabata, Takehiro Kamiya, Shunpei Imoto, Hana Tamura, Kumiko Ikuta , et al. · 2022

Nutrient distribution within the soil is generally heterogeneous. Plants, therefore, have evolved sophisticated systemic processes enabling them to optimize their nutrient acquisition efficiency. By organ-to-organ communication in Arabidop…

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