概述与目的
本节草案旨在为甘蔗田间线虫与根部病害的系统监测建立一套可审计的采样与实验室检测框架，覆盖采样时点与季节选择、样品类型与采集方式、样品包装与转运、以及实验室内的检测路线与质控要点，以便后续制定标准操作规程（SOP）并开展田间验证试验。该草案以甘蔗生长发育阶段为时间线参考，并结合分子与群落学分析、以及现场快速检测的现有研究成果提出技术路径与待验证要点。[S4][S5][S9]
以甘蔗栽培周期为背景的采样时机建议（草案）
1) 定植与建植期（移栽/播芽后）的基线监测：用于建立种植期初期土壤与根系的线虫与病原菌背景水平，便于后续比较与防治决策。参考有关植株建植及形成期对生长与逆境响应的讨论，本阶段可作为首轮系统性采样时点。[S4][S5]
2) 分蘖/成芽期（形成期）取样：分蘖与形成期为地上与地下器官互作活跃期，根际微生物与根系结构动态与营养吸收密切相关，适宜检测线虫活动峰值与根部侵染的初期迹象。[S3][S4]
3) 早伸长期（早强健生长阶段）采样：在主茎快速伸长与根系深入土层的时段进行采样，有利于发现对产量与抗逆性影响最大的根部病害与深层线虫群体学特征。[S5][S3]
4) 中后期/灌溉或干旱显著期监测：因水分胁迫时植株生理与病害表型变化显著，应在已知应力时点并列采样以分析病原体—胁迫—宿主的相互作用。（该建议基于甘蔗对不同时期干旱敏感性的研究背景，应在特定产区按具体水分事件调整采样时点。）[S4]
5) 收获前与收获后（含采伐后残茬/返茬）采样：用于评估病原物种在收获期的累积与残留风险，以及对下一季返茬（ratoon）植株潜在影响的预测与对策制定。[S4][S5]
（以上各时点为建议性框架，具体采样日期需结合当地栽培期、品种与气候资料做场地化调整，详见待考证项。）[S4][S5]
样本类型与采样总体原则（草案）
- 样本类型：推荐同时采集表层土壤（根际土）与伴随的根系样本；必要时并行采集植物地上部症状样本与木质部/韧皮部液体以辅助病原学或分子检测。该组合可支持传统形态学检验、线虫提取、培养（如适用）及分子/群落学分析。S9 的病原检测综述与现场快速检测研究突出了从植物材料直接获得核酸并结合现场预处理的可行性，支持同时获取多类型样本的做法。[S9][S10]
- 采样深度与根系定位：应以甘蔗根系分布与取土要求为导向，采样须覆盖根系活跃层并标注深度层次信息以便横向比较（例如表层根际与较深土层）；根系样本应采集能够代表吸收区的细根或侧根片段，用于线虫与病原菌的直接检出或培养。关于根部分泌物与根系代谢组的工作说明了以根系分离与定向取样获得可比数据的重要性，从而支持分层采样策略的必要性。[S10][S3]
- 空间代表性与复合样本：为提高检测效率与代表性，建议在田块内按若干子区采集复合样本并保留单点原始样本作追溯；田间代表区域的定义应基于田块的地形、种植与管理差异并记录GPS与地块信息以便后续空间分析（在甘蔗产量估算研究中常用划定代表面积采样以推算地块水平指标，作为概念依据）。[S4]
（关于具体每个复合样本中需合并多少个取样点、格网间距及每公顷样本数等统计设计参数，当前资料不足，列入研究缺口与待验证项。）[S4][S3]
现场取样与样品处置（草案）
- 现场操作要点：使用经消毒或一次性器具，避免交叉污染；记录田块编号、采样深度、植株生长阶段、土壤湿度、近期农事操作与农药使用史等元数据；优先将土壤和活根放入透气或冷藏容器并尽快冷链转运至实验室。关于现场快速检测的研究显示，简单的一步热裂解或现场裂解可用于后续磁珠捕获或电化学检测，表明现场初步处理能降低样品劣变风险并加速诊断流程，但其方法需与具体检测法相适配并经验证。[S9][S10]
- 样品保存与处理时间窗（待验证）：用于生物学活性检测（如活线虫计数）样品宜尽快处理；如需冷藏，常见做法为短期4 °C保存并在48小时内处理；若采用核酸检测，可使用裂解/保存试剂或低温冷冻保存以维持核酸完整性。上述保存时间窗与温度建议为操作通则性推论，缺乏甘蔗-线虫/根病专门对比试验数据，需列入验证项以形成正式SOP。[S9]
实验室检测流程框架（草案）
1) 初筛与形态学检测：土壤样本经粗筛与分层处理后用于线虫学常规观察（显微镜下形态鉴定）；若需计数，可结合经典的浸洗或漏斗法等形态学前处理步骤（具体操作步骤与方法学对比文件当前未包含于已获授权资料，见研究缺口）。[S9]
2) 线虫提取与分离（方法须验证）：常见的线虫提取法包括Baermann渠道法与离心—浮选等，适用性、回收率与工作量之间存在权衡；目前可用公开且经验证的SOP链接在本资料集中缺失，须在后续工作中收集与验证并据此选定实验室标准操作方法。[S9]
3) 分子检测：针对难培的病原体（如某些细菌与木质部病原），已有研究采用PCR、实时PCR、LAMP等方法进行检测或采用新型电化学纳米传感平台以简化现场前处理。实施分子检测时应包含阳/阴性对照、内参与抑制物检测，且建立检测灵敏度与定量范围的验证曲线。[S9]
4) 群落与研究级分析：用于研究线虫群落结构或根际微生物群落动态时，可采用高通量测序（16S/ITS、18S或宏基因组学）及转录组/代谢组方法以解析病原物与宿主或微生物群落的相互作用。此类方法在甘蔗生长与根际微生物研究中已有应用案例，且需要严格的生物信息学质控流程（例如测序数据的质量控制、比对与差异分析）。[S1][S2][S3][S10]
质控要点与数据管理（草案）
- 实验室流程应记录批次号、操作人员、试剂批号，并保留原始显微图像与电泳/扩增曲线或测序原始数据以备追溯。转录组与宏基因组分析工作流需列入测序质控步骤（例如原始数据质量过滤与比对统计），以保证结果可比性与可复现性。[S1][S2]
- 建议所有原始测量结果与元数据纳入结构化数据库，记录GPS、采样深度、作物生育期、施肥和灌溉历史等变量，以便开展空间-时间风险评估与模型构建（参考公开研究的数据存储与共享实践）。[S2][S3]
安全与专家复核问题（须专门评审）
- 采样与检测作业中涉及化学试剂、农药残留样本和机械取样器具，须由跨学科专家评估相关的劳动保护、生物安全与机械安全措施。请专家回答：在田间采样与机械取样时，如何限定个人防护装备（PPE）与消毒流程以降级交叉污染与职业暴露风险？此外，对拟议的现场裂解与简化核酸提取步骤在安全性、废物处置及现场可接受性方面有何具体建议？[S9]
- 对于涉及农药或土壤消毒剂样品的检测，应征询化学分析与毒理学专家关于样本处置与残留检测的要求，以避免对检测结果的干扰并保障实验室安全。[S9]
草案要点归纳与后续工作建议
1) 本草案建立了以甘蔗生育阶段为时间轴的采样时点框架，并提出了土壤—根系—植物组织的多层次样本组合策略与实验室检测路线图（形态学->分子->群落学）。[S4][S5][S9][S1][S3]
2) 若要将草案转为可执行SOP，必须开展田间与室内的比对实验以验证：采样格网设计与样本量、样品保存条件与时间窗、不同线虫提取方法的回收率与适用性、以及现场裂解/快速检测方法与实验室标准方法的一致性（详见研究缺口与待验证项）。[S9][S4]
3) 建议组织多学科专家组（植病、线虫学、分子检测、土壤学、统计学与机械安全），在若干试点田块开展并行比对试验以获得可推广的SOP并形成公开可审计的技术文件与培训材料。[S2][S3]
---
来源资料
- 来源网站：europepmc.org；原始文件名：Transcriptome and WGCNA Reveal the Key Genes of Arbuscular Mycorrhizal Fungi in Regulating Sugarcane Growth and Nutrient Absorption；原始链接：https://europepmc.org/articles/PMC12224041
- 来源网站：europepmc.org；原始文件名：Bio-Organic Fertilizer Modulates the Rhizosphere Microbiome to Enhance Sugarcane Growth and Suppress Smut Disease；原始链接：https://europepmc.org/articles/PMC12654690
- 来源网站：europepmc.org；原始文件名：Rhizosphere microbiome dynamics and hormonal interactions regulating tiller development in sugarcane cultivars；原始链接：https://europepmc.org/articles/PMC13149797
- 来源网站：europepmc.org；原始文件名：Timing and Duration of Drought Differentially Affect Growth and Yield Components Among Sugarcane Genotypes Photosynthesis and water relations in Brazilian sugarcane Carbon partitioning in sugarcane (Saccharum species) Sugarcane Responses at Water Deficit Conditions Beyond sugar and ethanol production: Value generation opportunities through sugarcane residues Physiological and agronomic traits of certain sugarcane genotypes grown under field conditions as influenced by early drought stress Climate variability and rainfed sugarcane production: Thailand a case study Sugarcane breeding, germplasm development and supporting genetics research in Thailand Determination of planting season of sugarcane at Kuraz sugar development project, Southern Ethiopia Effects of duration and combination of drought and flood conditions on leaf photosynthesis, growth and sugar content in sugarcane Genotypic variation in transpiration efficiency due to differences in photosynthetic capacity among sugarcane–rel；原始链接：https://europepmc.org/articles/PMC11902036
- 来源网站：europepmc.org；原始文件名：Developing new sugarcane varieties suitable for mechanized production in China: principles, strategies and prospects In silico identification of sugarcane (Saccharum officinarum L.) genome encoded microRNAs targeting sugarcane bacilliform virus An overview of the development of mechanization harvesting technology for sugarcane in China Screening of candidate genes associated with brown stripe resistance in sugarcane via BSR-seq analysis Transgenic sugarcane with a cry1Ac gene exhibited better phenotypic traits and enhanced resistance against sugarcane borer Particle bombardment of the cry2A gene cassette induces stem borer resistance in sugarcane Rhizosphere bacterial community characteristics over different years of sugarcane ratooning in consecutive monoculture Current situation and improvement measures of the mechanization of sugarcane production A first look at the ability to use genomic prediction for improving the ratooning ability of sugarcane Improving sugarcane for biofuel: en；原始链接：https://europepmc.org/articles/PMC10802142
- 来源网站：europepmc.org；原始文件名：Synergistic Effects of Sugarcane Bagasse Biochar and Eisenia fetida Enhance Biogenic Stabilization of Sewage Sludge and Sugar Industry Waste Through Vermicomposting Modeling the spatial distribution of crop sequences at a large regional scale using land-cover survey data: A case from France New insight into the impact of biochar during vermi-stabilization of divergent biowastes: Literature synthesis and research pursuits Preincubation and vermicomposting of divergent biosolids exhibit vice versa multielements stoichiometry and earthworm physiology Pyrolytic temperatures impact lead sorption mechanisms by bagasse biochars An econometric analysis of major Chinese food crops: An empirical study Sugarcane bagasse biochars impact respiration and greenhouse gas emissions from a latosol The antibiotic activity and mechanisms of sugarcane (Saccharum officinarum L.) bagasse extract against food-borne pathogens Biotechnological potential of agro-industrial residues. I: Sugarcane bagasse Producti；原始链接：https://europepmc.org/articles/PMC13113537
- 来源网站：europepmc.org；原始文件名：Mechanistic Insights into Pancreatic Lipase Inhibition by Sugarcane Polyphenols: A Structural and Kinetic Study Health policy and public health implications of obesity in China Health consequences of obesity and projected future obesity health burden in China Potential lipase inhibitor from underutilized part of Andrographis paniculata: Targeted isolation and mechanism of inhibition Orlistat for the long-term treatment of obesity Orlistat: A review of its use in the management of obesity Tannin fraction of pistachio green hull extract with pancreatic lipase inhibitory and antioxidant activity In-vitro functional efficacy of extracts from Phyllanthus emblica, Eucalyptus globulus, Tinospora cordifolia as pancreatic lipase inhibitor and source of anti-oxidant in goat meat nuggets Flowers of Allium cepa L. as Nutraceuticals: Phenolic Composition and Anti-Obesity and Antioxidant Effects in Caenorhabditis elegans Inhibition of pancreatic lipase by coffee leaves-derived polyphenols: A mechani；原始链接：https://europepmc.org/articles/PMC13164236
- 来源网站：europepmc.org；原始文件名：Migrant (farm)workers and farmers in China and Myanmar: a perspective from the sugarcane sector Hukou and land: Market reform and rural displacement in China Politically engaged, pluralist and internationalist: Critical agrarian studies today Rurally rooted cross-border migrant workers from Myanmar, covid-19, and agrarian movements How agricultural contracting services are reshaping small-scale household farming in China Social reproduction of ‘Classes of labour’ in the rural areas of South Africa: Contradictions and contestations Introduction: Critical agrarian studies in theory and practice Refugees in the agricultural sector: Some notes on syrians in Hatay Province, Turkey Who owns China’s land? Policies, property rights and deliberate. Institutional ambiguity Excavating agrarian transformation. Under ‘secure’crop booms: Insights from the China–Myanmar borderland How transnational labor migration affects upland land use practices in the receiving country: Findings from the China-Mya；原始链接：https://europepmc.org/articles/PMC12644106
- 来源网站：europepmc.org；原始文件名：A DNA Adsorption-Based Biosensor for Rapid Detection of Ratoon Stunting Disease in Sugarcane；原始链接：https://europepmc.org/articles/PMC12385017
- 来源网站：europepmc.org；原始文件名：Metabolomic Analysis Revealed the Differences in Metabolites Between Three Different Sugarcane Stems and Leaves；原始链接：https://europepmc.org/articles/PMC12114123
来源与版权状态仍须人工审核；未核实资料不得公开。