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The Cassava Genome: Current Progress, Future Directions

Journal Article · · Tropical Plant Biology
 [1];  [2];  [3];  [4];  [3];  [3];  [5];  [6];  [7];  [8];  [9];  [10]
  1. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States); OSTI
  2. Univ. of Arizona, Tucson, AZ (United States). BIO5 Inst.
  3. 454 Life Sciences (Roche), Branford, CT (United States)
  4. Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States). School of Medicine. Inst. for Genome Sciences (IGS)
  5. Johns Hopkins Univ., Baltimore, MD (United States)
  6. Donald Danforth Plant Science Center, St. Louis, MO (United States). ILTAB
  7. CIAT, Recta Cali-Palmira (Colombia)
  8. Life Technologies Corp, Carlsbad, CA (United States)
  9. Univ. of California, Berkeley, CA (United States). Dept. of Moelcular and Cell Biology
  10. Dow Agrosciences, Indianapolis, IN (United States)
The starchy swollen roots of cassava provide an essential food source for nearly a billion people, as well as possibilities for bioenergy, yet improvements to nutritional content and resistance to threatening diseases are currently impeded. A 454-based whole genome shotgun sequence has been assembled, which covers 69% of the predicted genome size and 96% of protein-coding gene space, with genome finishing underway. The predicted 30,666 genes and 3,485 alternate splice forms are supported by 1.4 M expressed sequence tags (ESTs). Maps based on simple sequence repeat (SSR)-, and EST-derived single nucleotide polymorphisms (SNPs) already exist. Thanks to the genome sequence, a high-density linkage map is currently being developed from a cross between two diverse cassava cultivars: one susceptible to cassava brown streak disease; the other resistant. An efficient genotyping-by-sequencing (GBS) approach is being developed to catalog SNPs both within the mapping population and among diverse African farmer-preferred varieties of cassava. These resources will accelerate marker-assisted breeding programs, allowing improvements in disease-resistance and nutrition, and will help us understand the genetic basis for disease resistance.
Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1816627
Journal Information:
Tropical Plant Biology, Journal Name: Tropical Plant Biology Journal Issue: 1 Vol. 5; ISSN 1935-9756
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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