1
|
Cerrudo D, Cao S, Yuan Y, Martinez C, Suarez EA, Babu R, Zhang X, Trachsel S. Genomic Selection Outperforms Marker Assisted Selection for Grain Yield and Physiological Traits in a Maize Doubled Haploid Population Across Water Treatments. FRONTIERS IN PLANT SCIENCE 2018; 9:366. [PMID: 29616072 PMCID: PMC5869257 DOI: 10.3389/fpls.2018.00366] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 03/05/2018] [Indexed: 05/22/2023]
Abstract
To increase genetic gain for tolerance to drought, we aimed to identify environmentally stable QTL in per se and testcross combination under well-watered (WW) and drought stressed (DS) conditions and evaluate the possible deployment of QTL using marker assisted and/or genomic selection (QTL/GS-MAS). A total of 169 doubled haploid lines derived from the cross between CML495 and LPSC7F64 and 190 testcrosses (tester CML494) were evaluated in a total of 11 treatment-by-population combinations under WW and DS conditions. In response to DS, grain yield (GY) and plant height (PHT) were reduced while time to anthesis and the anthesis silking interval (ASI) increased for both lines and hybrids. Forty-eight QTL were detected for a total of nine traits. The allele derived from CML495 generally increased trait values for anthesis, ASI, PHT, the normalized difference vegetative index (NDVI) and the green leaf area duration (GLAD; a composite trait of NDVI, PHT and senescence) while it reduced trait values for leaf rolling and senescence. The LOD scores for all detected QTL ranged from 2.0 to 7.2 explaining 4.4 to 19.4% of the observed phenotypic variance with R2 ranging from 0 (GY, DS, lines) to 37.3% (PHT, WW, lines). Prediction accuracy of the model used for genomic selection was generally higher than phenotypic variance explained by the sum of QTL for individual traits indicative of the polygenic control of traits evaluated here. We therefore propose to use QTL-MAS in forward breeding to enrich the allelic frequency for a few desired traits with strong additive QTL in early selection cycles while GS-MAS could be used in more mature breeding programs to additionally capture alleles with smaller additive effects.
Collapse
Affiliation(s)
- Diego Cerrudo
- Facultad de Agronomia, Universidad Nacional de Mar del Plata, Buenos Aires, Argentina
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
| | - Shiliang Cao
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
- Maize Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin, China
| | - Yibing Yuan
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
- Maize Research Institute, Sichuan Agricultural University, Wenjiang, China
| | - Carlos Martinez
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
| | - Edgar Antonio Suarez
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
| | - Raman Babu
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
| | - Xuecai Zhang
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
- Xuecai Zhang
| | - Samuel Trachsel
- Global Maize Program-Physiology, International Maize and Wheat Improvement Center (CIMMYT), Carretera México Veracruz, Texcoco, Mexico
- *Correspondence: Samuel Trachsel
| |
Collapse
|
2
|
Liu Y, Du H, He X, Huang B, Wang Z. Identification of differentially expressed salt-responsive proteins in roots of two perennial grass species contrasting in salinity tolerance. JOURNAL OF PLANT PHYSIOLOGY 2012; 169:117-26. [PMID: 22070977 DOI: 10.1016/j.jplph.2011.08.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 08/12/2011] [Accepted: 08/25/2011] [Indexed: 05/25/2023]
Abstract
This study was designed to identify physiological responses and differential proteomic responses to salinity stress in roots of a salt-tolerant grass species, seashore paspalum (Paspalum vaginatum), and a salt-sensitive grass species, centipedegrass (Eremochloa ophiuroides). Plants of both species were exposed to salinity stress by watering the soil with 300 mM NaCl solution for 20 d in a growth chamber. The 2-DE analysis revealed that the abundance of 8 protein spots significantly increased and 14 significantly decreased in seashore paspalum, while 19 and 16 protein spots exhibited increase and decrease in abundance in centipedegrass, respectively. Eight protein spots that exhibited enhanced abundance in seashore paspalum under salinity stress were subjected to mass spectrometry analysis. Seven protein spots were successfully identified, they are peroxidase (POD, 2.36-fold), cytoplasmic malate dehydrogenase (cMDH, 5.84-fold), asorbate peroxidase (APX, 4.03-fold), two mitochondrial ATPSδ chain (2.26-fold and 4.78-fold), hypothetical protein LOC100274119 (5.01-fold) and flavoprotein wrbA (2.20-fold), respectively. Immunblotting analysis indicated that POD and ATPSδ chain were significantly up-regulated in seashore paspalum at 20 d of salinity treatment while almost no expression in both control and salt treatment of centipedegrass. These results indicated that the superior salinity tolerance in seashore paspalum, compared to centipedegrass, could be associated with a high abundance of proteins involved in ROS detoxification and energy metabolism.
Collapse
Affiliation(s)
- Yiming Liu
- School of Agricultural and Biological Sciences, Shanghai Jiao Tong University, 800 DongChuan Road, MinHang District, Shanghai, 200240, PR China
| | | | | | | | | |
Collapse
|
3
|
Robertson D, Woessner JP, Gillham NW, Boynton JE. Molecular characterization of two point mutants in the chloroplast atpB gene of the green alga Chlamydomonas reinhardtii defective in assembly of the ATP synthase complex. J Biol Chem 1989. [DOI: 10.1016/s0021-9258(18)94180-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
4
|
Hudson GS, Mason JG. The chloroplast genes encoding subunits of the H(+)-ATP synthase. PHOTOSYNTHESIS RESEARCH 1988; 18:205-222. [PMID: 24425166 DOI: 10.1007/bf00042985] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/1987] [Accepted: 02/12/1988] [Indexed: 06/03/2023]
Abstract
Three CF1 and three CF0 subunits of the chloroplast H(+)-ATP synthase are encoded on the chloroplast genome. The chloroplast atp genes are organized as two operons in plants but not in the green alga, Chlamydomonas reinhardtii. The atpBE or β operon shows a relatively simple organisation and transcription pattern, while the atpIHFA or α operon is transcribed into a large variety of mRNAs. The atp genes are related to those of cyanobacteria and, more distantly, to those of non-photosynthetic bacteria such as E. coli, suggesting a common origin of most F1F0 ATP synthase subunits. Both the chloroplast and cyanobacterial ATP synthases have four F0 subunits, not three as in the E. coli complex. The proton pore of the CF0 is proposed to be formed by the interaction of subunits III and IV.
Collapse
Affiliation(s)
- G S Hudson
- Division of Plant Industry, CSIRO, GPO Box 1600, 2601, Canberra, A.C.T., Australia
| | | |
Collapse
|