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  • 發布時間:2020-04-04 23:25 原文鏈接: 利用植物表型組學挖掘基因組學的成果

    到2050年,全球人口將達到97億,預計作物產量翻一番才能滿足全球人口的糧食需求。為了達到這一目標,作物產量需每年增長2.4%,但目前作物產量平均增長率僅為1.3%。作物生產性能的遺傳改良仍然是提高作物生產力的關鍵因素,但當前的改善速度無法滿足可持續性和糧食安全的需要。為了確保糧食安全、生態系統的可持續發展,必須培育高產、適應新氣候和多變氣候的作物。

    基因組學和表型組學的進展正在提供對復雜的生物學機制的洞察,這些機制是植物對環境變化作出反應的基礎。然而,將基因型與表型聯系起來培育氣候適應性作物品種仍然是一個巨大的挑戰,阻礙了高通量基因組學和表型組學在育種中的最佳應用。

    本文綜述了植物表型系統化、快速化、微創化和低成本化的必要性,討論了其向現代高通量表型的演變、適應高通量表型的性狀、高通量表型與基因組學的整合以及高通量表型在提高育種效率和加快作物品種培育中的意義。

    根系表型(a,g為微根管法原位測量

    鷹嘴豆耐熱表型分析研究中的葉片葉綠素熒光成像

    葉片上半部分沒有經過熱處理,下半部分在46°C下熱處理1小時。深藍色為高光合活性(高fv/fm),而橙色、黃色和綠色或完全黑色代表低光合活性。


    紅外熱成像表征冠層溫度


    不同品種蘋果花粉的活性(微流控阻抗流式細胞法)

    表1常用的作物高通量植物表型平臺(HTPPS)

    Name

    Target Plant Organ

    Parameters

    Description

    PHENOPSIS

    Leaf

    Plant growth parameters

    An automated platform for  reproducible phenotyping of plant responses to soil water deficit in Arabidopsis  thaliana

    WIWAM

    Leaf

    Growth parameters

    Used to impose stress early  during leaf development

    PHENOSCOPE

    Shoots

    Vegetative growth and  homogeneity

    An integrated device, allowing a  simultaneous culture of individual Arabidopsis plants and  high-throughput acquisition, storage, and analysis of quality phenotypes

    GROWSCREEN

    Leaf

    3D surface area of leaf discs

    Platform to study plant leaf  growth fluorescence and root architecture from seedling under control  conditions in Arabidopsis thaliana, barley and maize

    TraitMill

    Flowers, grains, etc.

    Growth and yield parameters

    Automated high resolution  phenotypic platform, uniquely placed to identify genes that improve the yield  of cereals

    PlantScan

    Whole plant

    Vegetative growth parameters

    Automated high-resolution  phenomic center providing non-invasive analysis of plant structure,  morphology and function in Gossypium, wheat and maize

    LemnaTec

    Leaf

    Growth and yield parameters

    Visualize and analyze 2D/3D  non-destructive high-throughput imaging, monitor plant growth and behavior  under fully controlled conditions

    LeasyScan

    Leaf, whole plant

    Canopy traits

    Phenotyping for traits  controlling plant water use with precision in pearl millet

    HRPF

    Whole plant

    Growth and yield parameters

    High-throughput rice phenotyping  facility

    GlyPh (self-construction)

    Whole plant

    Soil water content and growth  estimation

    Low-cost platform for  phenotyping plant growth and water use under a broad range of conditions

    BreedVision

    Whole plant

    Growth and physiological parameters

    Measures various agronomic  traits and leads to non-destructive phenotyping for crop improvement and  plant genetic studies

    PlantScreenTM

    Shoot

    Chlorophyll fluorescence imaging  and non-imaging chlorophyll fluorescence, growth parameters

    Evaluates various parameters of  chlorophyll fluorescence obtained from kinetic chlorophyll fluorescence  imaging

    OloPhen

    Whole plant

    Rosette area, growth and  survival rate

    Suitable for analysis of rosette  growth in multi-well plates, suitable to evaluate plant stress tolerance.

    Color eye
     (RBG scanner)

    Leaf

    Leaf greenness, lesions

    Data can be overlayed over laser  triangulation data obtained by plant eye

    LabVIEW

    Canopy

    Growth parameters

    Low-cost, accurate, and  high-throughput phenotyping system with custom algorithms

    Shovelomics

    Root

    Root growth parameters

    Identification and selection of  useful root architectural phenotypes for annual legume or dicotyledonous  crops.

    Phenodyn/Phenoarch

    Leaf

    Leaf elongation rate

    Follows QTL-dependent daily  patterns in maize lines under naturally fluctuating conditions, located in INRA,  France

    LemnaGrid

    Root and leaf

    Plant and root growth parameters

    Compares growth behaviors of  different genotypes, discriminates plant root zone water status

    Integrated Analysis Platform  (IAP)

    Leaf

    Plant leaf orientation

    Provides user-friendly  interfaces with highly adaptable core functions, supports image data transfer  from different acquisition environments and large-scale image analysis

    LAMINA

    Leaf

    Leaf parameters

    Tool for automated analysis of  images of leaves, designed to provide classical indicators of leaf structure

    Rosette Tracker

    Shoot

    Area, perimeter diameter  stockiness

    Allows to simultaneously  quantify plant growth, photosynthesis, and leaf temperature-related  parameters

    Leaf Analyser

    Leaf

    Leaf architecture

    Provides a high-throughput  method to evaluate leaf shape variation in higher-dimensional phenotypic  space

    Self-construction

    Root

    Root growth parameters

    Algorithms allow the automatic  extraction of many root traits in a high-throughput fashion

    Phenovator

    Leaf

    Photosynthesis

    High-throughput phenotyping  facility for photosynthesis developed at Wageningen University and Research

    表2常用的高通量植物表型分析軟件包(節選)

    Name of the Software

    Target Plant Organ

    Parameters

    Description

    MATLAB

    Leaf

    Leaf architecture

    Uses image processing algorithms  for high-throughput analysis of images for estimating phenotypes/traits  associated with tested plants

    HTPheno

    Shoot

    Height, width and shoot area

    Analyzes colour images of plants  and different phenotypical parameters for each plant

    GiaRoots

    Root

    Morpho-geometric parameters

    Semi-automated software tool for  high-throughput analysis of root system images

    RootReader 3D

    Roots

    Root types and phenotypic root  traits

    Imaging and software platform  for HTP of 3-D root traits during seedling development

    PhenoPhyte

    Leaf

    Leaf and plant growth parameters

    Tool to analyze the  non-destructive imaging of plants can be used in suboptimal imaging  conditions also

    RootNav

    Root

    Root system architecture

    Image analysis tool for  semi-automated quantification of complex root system architecture in a range  of plant species

    SmartGrain

    Seed

    Seed structure parameters

    Software for high-throughput  measurement of seed shape, makes possible to distinguish between lines with  small differences in seed shape

    SmartRoot

    Root

    Root system architecture

    Operating system-independent  freeware and relies on cross-platform standards for communication with  data-analysis software

    DART

    Root

    Root system architecture

    Uses human vision tracing to  avoid analytical biases

    Tomato analyzer

    Fruit

    Fruit colour

    Analyzes tomato fruit colour


    圖5 高通量植物表型平臺(LemnaTec 3D Scanalyzer)

     

    全文閱讀
    Pratap A, Gupta S, Nair R M, et al. Using plant phenomics to exploit the gains of genomics. Agronomy, 2019, 9(3): 126.


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