在索诺拉沙漠条件下,本地丛枝菌根真菌通过表型整合和功能可塑性推动生态生理学发展

IF 5.4 2区 生物学 Q1 PLANT SCIENCES
Alberto Jiménez, Aldo Gutiérrez, Antonio Orozco, Georgina Vargas, Idaly Morales, Esteban Sánchez, Ezequiel Muñoz, Francisco Soto, Miguel Ángel Martínez‐Téllez, Martín Esqueda
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引用次数: 0

摘要

对于环境驱动因素和土壤中的本地共生真菌会在多大程度上诱导 C3 植物的生态生理/菌根反应发生突然(短期)、系统(多种性状)或特定(部分性状)的转变,目前所知甚少。我们培育了一种典型的本地 C3 植物(Capsicum annuum var. glabriusculum, "Chiltepín"),研究索诺拉沙漠的极端高温、日照制度(低 = 2,中 = 15,高 = 46 mol m2 d-1)和土壤中本地节支菌根真菌的密度(低 AMF = 1% v/v,高 AMF = 100% v/v)如何通过多种功能性状(106 个性状)驱动菌根反应的转变。即使在浓荫下,升温阈值也是无情的(例如,达到的过热最大阈值介于 47-63°C 之间),AMF 协同驱动了几个关键性状(例如,光合作用能力、生物量增加/生物量减少)。光合能力、生物量增加/测定和菌根定植性状);同时,日照制度促进了大多数(76%)功能性适应性状的短期和反方向改变(如存活、物候、光合作用、碳/氮经济)。多维还原分析表明,AMF对植物的表型整合和功能可塑性具有协同影响,以应对日照制度;然而,性状之间的复杂关系表明,表型差异决定了不同环境之间/环境内部生态生理/菌根表型的稳健程度。光合冠层表面扩展、Rubisco活性、光合作用氮分配、碳增益和不同的定植性状可能是植物整体生态生理/菌根健壮性增强的核心。总之,我们发现有证据表明,以AMF为关键效应因子的环境因子之间的强大综合效应可能会在短期内对植物的生态生理/菌根适应性产生重要影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Native arbuscular mycorrhizal fungi drive ecophysiology through phenotypic integration and functional plasticity under the Sonoran desert conditions
Knowledge is scarce to what extent environmental drivers and native symbiotic fungi in soil induce abrupt (short‐term), systemic (multiple traits), or specific (a subset of traits) shifts in C3 plants' ecophysiological/mycorrhizal responses. We cultivated an emblematic native C3 species (Capsicum annuum var. glabriusculum, “Chiltepín”) to look at how the extreme heat of the Sonoran desert, sunlight regimes (low = 2, intermediate = 15, high = 46 mol m2 d−1) and density of native arbuscular mycorrhizal fungi in soil (low AMF = 1% v/v, high AMF = 100% v/v), drive shifts on mycorrhizal responses through multiple functional traits (106 traits). The warming thresholds were relentlessly harsh even under intensive shade (e.g. superheat maximum thresholds reached ranged between 47–63°C), and several pivotal traits were synergistically driven by AMF (e.g. photosynthetic capacity, biomass gain/allometry, and mycorrhizal colonization traits); whereas concurrently, sunlight regimes promoted most (76%) alterations in functional acclimation traits in the short‐term and opposite directions (e.g. survival, phenology, photosynthetic, carbon/nitrogen economy). Multidimensional reduction analysis suggests that the AMF promotes a synergistic impact on plants' phenotypic integration and functional plasticity in response to sunlight regimes; however, complex relationships among traits suggest that phenotypic variation determines the robustness degree of ecophysiological/mycorrhizal phenotypes between/within environments. Photosynthetic canopy surface expansion, Rubisco activity, photosynthetic nitrogen allocation, carbon gain, and differential colonization traits could be central to plants' overall ecophysiological/mycorrhizal fitness strengthening. In conclusion, we found evidence that a strong combined effect among environmental factors in which AMF are key effectors could drive important trade‐offs on plants' ecophysiological/mycorrhizal fitness in the short term.
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来源期刊
Physiologia plantarum
Physiologia plantarum 生物-植物科学
CiteScore
11.00
自引率
3.10%
发文量
224
审稿时长
3.9 months
期刊介绍: Physiologia Plantarum is an international journal committed to publishing the best full-length original research papers that advance our understanding of primary mechanisms of plant development, growth and productivity as well as plant interactions with the biotic and abiotic environment. All organisational levels of experimental plant biology – from molecular and cell biology, biochemistry and biophysics to ecophysiology and global change biology – fall within the scope of the journal. The content is distributed between 5 main subject areas supervised by Subject Editors specialised in the respective domain: (1) biochemistry and metabolism, (2) ecophysiology, stress and adaptation, (3) uptake, transport and assimilation, (4) development, growth and differentiation, (5) photobiology and photosynthesis.
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