Next Article in Journal
Incidence and Molecular Identification of Apple Necrotic Mosaic Virus (ApNMV) in Southwest China
Next Article in Special Issue
Heterotic Effect of Different Cytoplasmic Combinations in Sunflower Hybrids Cultivated Under Diverse Irrigation Regimes
Previous Article in Journal
Genome-Wide Identification and Comparative Analysis of MYB Transcription Factor Family in Musa acuminata and Musa balbisiana
Previous Article in Special Issue
Heterosis Breeding in Eggplant (Solanum melongena L.): Gains and Provocations
Open AccessArticle

In Arabidopsis thaliana Heterosis Level Varies among Individuals in an F1 Hybrid Population

1
Graduate School of Agricultural Science, Kobe University, Rokkodai, Nada-ku, Kobe 657-8501, Japan
2
School of Agriculture, Tokai University, Toroku, Higashi-ku, Kumamoto 862-8652, Japan
3
Iwate Biotechnology Research Center, Narita, Kitakami, Iwate 024-0003, Japan
4
Department of Horticulture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
5
CSIRO Agriculture and Food, Canberra, ACT 2601, Australia
6
University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia
*
Authors to whom correspondence should be addressed.
Authors contributed equally.
Plants 2020, 9(4), 414; https://doi.org/10.3390/plants9040414
Received: 20 February 2020 / Revised: 23 March 2020 / Accepted: 23 March 2020 / Published: 27 March 2020
(This article belongs to the Special Issue Plants Heterosis)
Heterosis or hybrid vigour is a phenomenon in which hybrid progeny exhibit superior yield and biomass to parental lines and has been used to breed F1 hybrid cultivars in many crops. A similar level of heterosis in all F1 individuals is expected as they are genetically identical. However, we found variation in rosette size in individual F1 plants from a cross between C24 and Columbia-0 accessions of Arabidopsis thaliana. Big-sized F1 plants had 26.1% larger leaf area in the first and second leaves than medium-sized F1 plants at 14 days after sowing in spite of the identical genetic background. We identified differentially expressed genes between big- and medium-sized F1 plants by microarray; genes involved in the category of stress response were overrepresented. We made transgenic plants overexpressing 21 genes, which were differentially expressed between the two size classes, and some lines had increased plant size at 14 or 21 days after sowing but not at all time points during development. Change of expression levels in stress-responsive genes among individual F1 plants could generate the variation in plant size of individual F1 plants in A. thaliana. View Full-Text
Keywords: heterosis; hybrid vigour; transcriptome heterosis; hybrid vigour; transcriptome
Show Figures

Figure 1

MDPI and ACS Style

Mehraj, H.; Kawanabe, T.; Shimizu, M.; Miyaji, N.; Akter, A.; Dennis, E.S.; Fujimoto, R. In Arabidopsis thaliana Heterosis Level Varies among Individuals in an F1 Hybrid Population. Plants 2020, 9, 414.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop