The response of the stable oxygen isotope composition in desert plants to salt stress

• Project/Area Number: 26450192
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Mie University
• Principal Investigator: MATSUO NAOKO 三重大学, 生物資源学研究科, 講師 (00423012)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 乾燥地植物 / 安定同位体比 / 塩回避 / 不定根 / 葉による露吸収 / 水利用効率 / 蒸散速度 / 吸水源 / 葉による吸水 / 水の再分配 / 水輸送 / 塩の回避 / 葉内水 / 葉有機物 / 酸素安定同位体比 / 塩ストレス / 葉の露吸収 / 匍匐枝 / 主根と不定根の機能

Outline of Final Research Achievements

The salt tolerance of desert plants was assessed by using the stable isotope ratios to restore/conserve the arid ecosystems degraded by the salinization. We conducted the experiments that the 18O-labeled water was supplied to roots or leaves of a prostrate lifeform shrub originated from semiarid areas of China. The results suggested that desert plants could avoid or mitigate the high-salinity water in shallower soil layer and absorb the low-salinity dew on leaf surfaces. We also examined the relation between branch morphology and isotope ratios of leaf organic matter in a mangrove tree growing in per-arid areas on the Red Sea coast and found that the leaves of these trees enhanced intrinsic water-use efficiency in response to decreasing hydraulic conductivity of xylem by elongating branches. Our findings indicate that the stable isotope ratios of leaf organic matter and water are useful to assess the salt tolerance of desert plants.

Research Products

• [Journal Article] Branch Morphology of a Mangrove (<i>Avicennia marina</i> (Forsk.) Vierh) Growing in a Per-Arid Area on the Egyptian Red Sea Coast Regulates Water Use of Its Leaves (2016)
  • Author(s): Matsuo N, Banjo R, Teraminami T, Afefe A, El-Shaffai A, Nakashima A, Nawata H, Yoshikawa K
  • Journal Title: Journal of Arid Land Studies Volume: 26 Issue: 3 Pages: 91-94
  • DOI: 10.14976/jals.26.3_91
  • NAID: 130005297263
  • ISSN: 0917-6985, 2189-1761
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Inorganic and Organic Osmolytes Accumulation in Five Halophytes Growing in Saline Habitats around Aiding Lake Area in Turpan Basin, Northwest China (2016)
  • Author(s): Maimaiti1 A, Iwanaga F, Taniguchi T, Hara N, Matsuo N, Mori N, Yunus Q, Yamanaka N
  • Journal Title: Arid Land Research and Management Volume: -
  • Peer Reviewed
• [Journal Article] Effects of salinity on fine root distribution and whole plant biomass of Tamarix ramosissima cuttings (2015)
  • Author(s): Imada, S., Matsuo, N., Acharya, K., Yamanaka, N.
  • Journal Title: Journal of Arid Environments Volume: 114 Pages: 84-90
  • DOI: 10.1016/j.jaridenv.2014.11.011
  • Peer Reviewed / Open Access
• [Journal Article] Contribution of Adventitious Roots to Water Use Strategy of Juniperus sabina in a Semiarid Area of China (2014)
  • Author(s): Lingli Yang, Naoko H. Miki, Naoko Matsuo, Guosheng Zhang, Linhe Wang and Ken Yoshikawa
  • Journal Title: Journal of Agricultural Science and Technology A & B Volume: 4 Pages: 251-259
  • Peer Reviewed / Open Access
• [Presentation] 中国半乾燥地の常緑針葉樹（Juniperus sabina）の葉からの吸水メカニズム (2016)
  • Author(s): 松尾奈緒子・磯部知世・佐藤佳奈子・三木直子
  • Organizer: 第63回日本生態学会大会
  • Place of Presentation: 仙台国際センター（仙台市）
  • Year and Date: 2016-03-20
• [Presentation] Branch morphology of a mangrove (Avicennia marina (Forsk.) Vierh) growing in a per-arid area on the Egyptian Red Sea coast regulates water use of its leaves (2015)
  • Author(s): Naoko Matsuo, Ryo Banjo, Tomohiro Teraminami, Abdelwahab Afefe, Amgad El-Shaffai, Atsushi Nakashima, Hiroshi Nawata, Ken Yoshikawa
  • Organizer: Desert Technology第12回国際会議
  • Place of Presentation: カイロ大学（エジプト）
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] 中国半乾燥地のJuniperus sabinaの乾燥ストレス下における樹液流の変動 (2015)
  • Author(s): 三木直子・佐藤佳奈子・青木万実・楊霊麗・松尾奈緒子
  • Organizer: 日本森林学会
  • Place of Presentation: 北海道大学（札幌市）
  • Year and Date: 2015-03-28
• [Presentation] 乾燥ストレス下の匍匐性樹木の樹体と土壌間の水動態が水同位体分布に及ぼす影響 (2015)
  • Author(s): 青木万実・松尾奈緒子・佐藤佳奈子・楊霊麗・三木直子
  • Organizer: 日本生態学会大会
  • Place of Presentation: 鹿児島大学（鹿児島市）
  • Year and Date: 2015-03-19
• [Presentation] 水安定同位体比を用いた葉による露吸収経路の解明 (2015)
  • Author(s): 高山友香・松尾奈緒子
  • Organizer: 日本生態学会大会
  • Place of Presentation: 鹿児島大学（鹿児島市）
  • Year and Date: 2015-03-19
• [Presentation] 乾燥・高塩分環境に生きる植物の水利用戦略 (2014)
  • Author(s): 松尾奈緒子
  • Organizer: 公開シンポジウム「乾燥地における樹木・森林の生理と生態」
  • Place of Presentation: 岡山大学（岡山市）
  • Year and Date: 2014-12-13
  • Invited
• [Presentation] 安定同位体比から見る生態系～地域スケールの水循環 (2014)
  • Author(s): 松尾奈緒子
  • Organizer: 水環境学会中部支部会
  • Place of Presentation: 三重県教育文化会館（津市）
  • Year and Date: 2014-10-03
  • Invited
• [Book] 国立科学博物館叢書・砂漠の水を分かち合う知恵(篠田謙一, 縄田浩志編) (2014)
  • Author(s): 松尾奈緒子・中島敦司
  • Total Pages: 454
  • Publisher: 東海大学出版