IDEAS home Printed from https://ideas.repec.org/a/eee/agiwat/v313y2025ics0378377425002094.html
   My bibliography  Save this article

Coordination of abscisic acid and hydraulic signals in stomatal closure and yield of soybean genotypes with varying isohydry under different water conditions

Author

Listed:
  • Yang, Sanwei
  • Zhang, Haixia
  • Jin, Yi
  • Turner, Neil C.
  • Pang, Jiayin
  • Chen, Yinglong
  • He, Jin

Abstract

Understanding soybean responses to drought stress is critical for breeding drought-tolerant varieties. The extent of stomatal regulation of leaf water potential during drought stress can be characterized by the degree of isohydry. We hypothesize that abscisic acid (ABA) and hydraulic signals, two key factors influencing stomatal regulation, coordinate differently to regulate stomatal closure and impact yield performance under varying drought intensities in soybeans with different isohydric behaviors. To test this, we selected four landraces and four modern cultivars exhibiting diverse isohydric behaviors and conducted a progressive drought experiment. The experiment measured stomatal conductance, photosynthetic rate (Pn), and leaf hydraulic conductance (Kleaf) as soil moisture progressively declined. Additionally, a water control experiment assessed foliar ABA content, osmotic adjustment (OA), and yield components under moderate (50 % pot capacity) and severe stress (30 % pot capacity) drought stress were compared relative to well-watered conditions. Results showed that modern cultivars, characterized by more isohydric behavior, produced higher ABA levels, triggering earlier stomatal closure at higher soil water content, which was subsequently modulated by hydraulic signals during prolonged drought. Isohydric genotypes also displayed enhanced OA, enabling them to maintain high Pn under severe drought stress. Under moderate drought stress, the isohydric cultivars experienced greater yield lose (21 % and 25 % for two isohydric cultivars vs. −8 % and 1 % for two landraces) and increased less water use efficiency for grain (WUEg). However, under severe drought stress, isohydric genotypes suffered less yield reduction (70 % and 72 % for isohydric cultivars vs. 79 % and 77 % for two anisohydric landraces) and increased more WUEg compared to anisohydric genotypes. Overall, isohydric genotypes, which exhibit a more conservative water-use strategy, are better suited for regions prone to severe drought stress. In contrast, anisohydric genotypes may perform better in regions with more reliable water availability.

Suggested Citation

  • Yang, Sanwei & Zhang, Haixia & Jin, Yi & Turner, Neil C. & Pang, Jiayin & Chen, Yinglong & He, Jin, 2025. "Coordination of abscisic acid and hydraulic signals in stomatal closure and yield of soybean genotypes with varying isohydry under different water conditions," Agricultural Water Management, Elsevier, vol. 313(C).
    • Handle: RePEc:eee:agiwat:v:313:y:2025:i:c:s0378377425002094
    DOI: 10.1016/j.agwat.2025.109495
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0378377425002094
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.agwat.2025.109495?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    References listed on IDEAS

    as
    1. Chen, Xi & Xing, Huanli & Liu, Bo & Wang, Yaosheng & Cui, Ningbo & Wang, Zhihui & Zhang, Yixuan, 2023. "Changes induced by multi-stage water stress on maize growth, water and nitrogen utilization and hormone signaling under different nitrogen supplies," Agricultural Water Management, Elsevier, vol. 290(C).
    2. Losciale, Pasquale & Gaeta, Liliana & Corsi, Mariadomenica & Galeone, Ciro & Tarricone, Luigi & Leogrande, Rita & Stellacci, Anna Maria, 2023. "Physiological responses of apricot and peach cultivars under progressive water shortage: Different crop signals for anisohydric and isohydric behaviours," Agricultural Water Management, Elsevier, vol. 286(C).
    3. Toro, Guillermo & Pastenes, Claudio & Salvatierra, Ariel & Pimientel, Paula, 2023. "Trade-off between hydraulic sensitivity, root hydraulic conductivity and water use efficiency in grafted Prunus under water deficit," Agricultural Water Management, Elsevier, vol. 282(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Wen, Shenglin & Cui, Ningbo & Wang, Yaosheng & Gong, Daozhi & Xing, Liwen & Wu, Zongjun & Zhang, Yixuan & Wang, Zhihui, 2024. "Determining effect of fertilization on reactive nitrogen losses through nitrate leaching and key influencing factors in Chinese agricultural systems," Agricultural Water Management, Elsevier, vol. 303(C).
    2. Liu, Pengzhao & Fan, Zhen & Yan, Zinan & Ren, Xiaolong & Zhao, Xining & Zhang, Jianjun & Chen, Xiaoli, 2024. "Evaluation of N nutrition and optimal fertilizer rate for ridge-furrow mulched maize based on critical N dilution curve under different water conditions," Agricultural Water Management, Elsevier, vol. 296(C).
    3. Tang, Zijun & Lu, Junsheng & Xiang, Youzhen & Shi, Hongzhao & Sun, Tao & Zhang, Wei & Wang, Han & Zhang, Xueyan & Li, Zhijun & Zhang, Fucang, 2024. "Farmland mulching and optimized irrigation increase water productivity and seed yield by regulating functional parameters of soybean (Glycine max L.) leaves," Agricultural Water Management, Elsevier, vol. 298(C).
    4. Ali, Nawab & Dong, Younsuk & Lavely, Emily, 2024. "Impact of irrigation scheduling on yield and water use efficiency of apples, peaches, and sweet cherries: A global meta-analysis," Agricultural Water Management, Elsevier, vol. 306(C).
    5. Li, Lu & Li, Haotian & Liu, Na & Lu, Yang & Shao, Liwei & Chen, Suying & Zhang, Xiying, 2024. "Water use characteristics and drought tolerant ability of different winter wheat cultivars assessed under whole growth circle and at seedling stage," Agricultural Water Management, Elsevier, vol. 300(C).

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:agiwat:v:313:y:2025:i:c:s0378377425002094. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/agwat .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.