Lentil rust: Present status and future prospects

Negussie, T.; Pretorius, Z. A.

doi:10.1016/j.cropro.2011.11.004

Cited by 15 publications

(17 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…). Rust resistance breeding in lentil, as in most cool‐season legumes, is still slow due to the difficulty and the relatively low investment on genetics, genomics and biotechnology of the legume crops, but also, and mainly because of the insufficient knowledge on the biology of the rust pathogen, with little agreement on its host specialization and the existence of races (Negussie and Pretorius ). Knowledge on the existence of races or even host specialization in U. viciae‐fabae is very limited.…”

Section: Discussionmentioning

confidence: 99%

“…Breeding for rust resistance is regarded as the most cost‐efficient method for rust control in legume crops (Rubiales et al. , Negussie and Pretorius ). In contrast with tropical legumes that have been largely studied leading to the identification of their associated rust resistance genes and closely linked markers that are readily used in marker‐assisted backcrossing (Faleiro et al.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Identification of pre‐ and posthaustorial resistance to rust (Uromyces viciae‐fabae) in lentil (Lens culinaris) germplasm

2013

View full text Add to dashboard Cite

Lentil (Lens culinaris Medik.) is an important cool-season legume that can be severely damaged by rust (Uromyces viciae-fabae (Pers.) Schröt.) in many parts of the world. In this work, a collection of L. culinaris germplasm accessions was screened under growth chamber conditions for response to U. viciae-fabae. Several sources of incomplete resistance have been identified, both of hypersensitive and of non-hypersensitive nature. Incomplete hypersensitive resistance was due to a late-acting host cell necrosis that resulted in an intermediate infection type (IT). Incomplete non-hypersensitive resistance was due to a hampered cell penetration not associated with host cell necrosis, reducing the number of haustoria per colony and therefore hindering the growth of the colony and reducing and retarding disease development in spite of a high IT.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Identification of pre‐ and posthaustorial resistance to rust (Uromyces viciae‐fabae) in lentil (Lens culinaris) germplasm

2013

View full text Add to dashboard Cite

show abstract

“…U. fabae (Pers.) de Bary) is regarded as one of the most important foliar diseases of lentil, widespread globally, with reported yield losses ranging from 25 to 100% [ 2 , 4 , 5 ]. Rust can be controlled by a number of fungicides but economic factors must be taken into consideration [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Identification and Characterization of Resistance to Rust in Lentil and Its Wild Relatives

Barilli

Rubiales

2023

Plants

View full text Add to dashboard Cite

Lentil rust is a major disease worldwide caused by Uromyces viciae-fabae. In this study, we screened a large germplasm collection of cultivated lentils (Lens culinaris ssp. culinaris) and its wild relatives, both in adult plants in the field with a local rust isolate during 2 seasons and in seedlings under controlled conditions with four fungal isolates of worldwide origin. The main results from our study were the following: (1) a significant number of accessions with resistance based on hypersensitive reaction (reduced Infection Type (IT)) were identified in cultivated lentil and in L. ervoides, L. nigricans and L.c. orientalis. The IT scores showed a clear isolate-specific response suggesting race-specificity, so each fungal isolate might be considered a different race. Resistance was identified against all isolates what might be the basis to develop a standard differential set that should be a priority for rust definition and monitoring. (2) Interestingly, although at lower frequency than in L. ervoides and L. nigricans, the hypersensitive response was also observed within cultivated lentil, with accession 1561 (L.c. culinaris) displaying resistance to the four isolates making this accession a valuable ready-to-use resource for lentil resistance breeding. Resistance to all other rust isolates was also available within L.c. culinaris in an isolate-specific manner. Accession 1308 (L. ervoides) showed resistance against all isolates tested, as well as a reduced number of accessions belonging to other wild Lens species. (3) In addition, our screenings allowed the identification of several accessions with partial resistance (reduced Disease Severity (DS) despite high IT). Adult Plant Resistance resulting in reduced severity in adult plants in the field, despite high susceptibility in seedlings, was more frequently identified in L.c. culinaris, but also in L. nigricans and L.c. orientalis.

show abstract

“…Rust is a severe foliar disease in lentils ( Rubiales et al., 2011 ). Breeding with CWRs to increase rust resistance of cultivars is a convenient method for this disease control in legume crops ( Barilli et al., 2009 ; Rubiales et al., 2011 ; Negussie and Pretorius, 2012 ; Sillero et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Climate change conditions the selection of rust-resistant candidate wild lentil populations for in situ conservation

et al. 2022

View full text Add to dashboard Cite

Crop Wild Relatives (CWR) are a valuable source of genetic diversity that can be transferred to commercial crops, so their conservation will become a priority in the face of climate change. Bizarrely, in situ conserved CWR populations and the traits one might wish to preserve in them are themselves vulnerable to climate change. In this study, we used a quantitative machine learning predictive approach to project the resistance of CWR populations of lentils to a common disease, lentil rust, caused by fungus Uromyces viciae-fabae. Resistance is measured through a proxy quantitative value, DSr (Disease Severity relative), quite complex and expensive to get. Therefore, machine learning is a convenient tool to predict this magnitude using a well-curated georeferenced calibration set. Previous works have provided a binary outcome (resistant vs. non-resistant), but that approach is not fine enough to answer three practical questions: which variables are key to predict rust resistance, which CWR populations are resistant to rust under current environmental conditions, and which of them are likely to keep this trait under different climate change scenarios. We first predict rust resistance in present time for crop wild relatives that grow up inside protected areas. Then, we use the same models under future climate IPCC (Intergovernmental Panel on Climate Change) scenarios to predict future DSr values. Populations that are rust-resistant by now and under future conditions are optimal candidates for further evaluation and in situ conservation of this valuable trait. We have found that rust-resistance variation as a result of climate change is not uniform across the geographic scope of the study (the Mediterranean basin), and that candidate populations share some interesting common environmental conditions.

show abstract

Lentil rust: Present status and future prospects

Cited by 15 publications

References 67 publications

Identification of pre‐ and posthaustorial resistance to rust (Uromyces viciae‐fabae) in lentil (Lens culinaris) germplasm

Identification of pre‐ and posthaustorial resistance to rust (Uromyces viciae‐fabae) in lentil (Lens culinaris) germplasm

Identification and Characterization of Resistance to Rust in Lentil and Its Wild Relatives

Climate change conditions the selection of rust-resistant candidate wild lentil populations for in situ conservation

Contact Info

Product

Resources

About