@article{fdi:010060642,
  title = {{N}ew sources of resistance to {M}eloidogyne incognita race 3 in wild cotton accessions and histological characterization of the defence mechanisms},
  author = {{M}ota, {F}. {C}. and {A}lves, {G}. {C}. {S}. and {G}iband, {M}. and {G}omes, {A}. {C}. {M}. {M}. and {S}ousa, {F}. {R}. and {M}attos, {V}. {S}. and {B}arbosa, {V}. {H}. {S}. and {B}arroso, {P}. {A}. {V}. and {N}icole, {M}ichel and {P}eixoto, {J}. {R}. and {R}ocha, {M}. {R}. and {C}arneiro, {R}. {M}. {D}. {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ccessions of {G}ossypium spp., some of them never previously tested, were evaluated for resistance to a local isolate of {M}eloidogyne incognita race 3 in greenhouse experiments. {N}ematode infection was characterized based on the galling and egg mass indexes and the reproduction factors ({RF}). {R}oot-knot nematode reproduction among the newly tested accessions varied from highly susceptible ({AS}0188, {AS}0189) to moderately resistant ({MT}123 no. 3), and some accessions showed highly reduced nematode reproduction ({CIR}1343, {CIR}1348, {F}ai {M}ui). {H}istological observations of two resistant accessions ({G}. barbadense {CIR}1348 and {G}. hirsutum {TX}-25, respectively) showed that resistance occurs through a two-stage mechanism in the first accession and through a single-stage mechanism in the second. {P}arasitism is blocked early after second-stage juvenile ({J}2) penetration or during its initial tissue migration ({CIR}1348) and the development of later-stage juveniles into female adults is suppressed at a later stage ({TX}-25 and {CIR}1348). {F}luorescence and bright light microscopy showed that root cells surrounding nematodes exhibit a hypersensitivity-like reaction, with the accumulation of presumably phenolic compounds and the presence of necrotic cells that limit the development of nematodes and the formation of giant cells. {U}nderdeveloped giant cells with degenerated cytoplasmic content were found in small numbers in {CIR}1348 and in large numbers in {TX}-25, along with deformed nematodes. {T}he full characterization of the defence mechanisms of novel sources of resistance to the root-knot nematode in cotton constitutes a first step towards their use in crop improvement.},
  keywords = {{G}ossypium spp ; host plant resistance ; hypersensitive response ; {M}eloidogyne incognita},
  booktitle = {},
  journal = {{P}lant {P}athology},
  volume = {62},
  numero = {5},
  pages = {1173--1183},
  ISSN = {0032-0862},
  year = {2013},
  DOI = {10.1111/ppa.12022},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060642},
}