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Auxin involvement in tepal senescence and abscission in Lilium: a tale of two lilies.

Lombardi L, Arrom L, Mariotti L, Battelli R, Picciarelli P, Kille P, Stead T, Munné-Bosch S, Rogers HJ - J. Exp. Bot. (2014)

Bottom Line: For example, tepals of Lilium longiflorum wilt substantially, while those of the closely related Lilium longiflorum×Asiatic hybrid (L.A.) abscise turgid.There was a dramatic increase in auxin levels with senescence in L. longiflorum but not in Lilium L.A.Fifty auxin-related genes were expressed in early senescent L. longiflorum tepals including 12 ARF-related genes.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, University of Pisa, Via Ghini 5, 56126 Pisa, Italy.

No MeSH data available.


Related in: MedlinePlus

Detachment of tepals in the two lily genotypes. (A) Outside of the corolla base of L. longiflorum at FB, ES, FS, and beyond. (B, C) Force (g) required to remove the corolla of L. longiflorum (B) at each stage (the force required at CB and FB could not be determined as the corolla tissue tore) plus at 1 and 2 d following the FS stage, and in Lilium L.A. (C) (again detachability could not be determined at CB and the value for FB was determined only from those that detached and may represent a considerable underestimate as n<10; in Lilium L.A., by FS the tepals had abscised naturally. Values are means±SE with n≥10 unless otherwise stated.
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Figure 3: Detachment of tepals in the two lily genotypes. (A) Outside of the corolla base of L. longiflorum at FB, ES, FS, and beyond. (B, C) Force (g) required to remove the corolla of L. longiflorum (B) at each stage (the force required at CB and FB could not be determined as the corolla tissue tore) plus at 1 and 2 d following the FS stage, and in Lilium L.A. (C) (again detachability could not be determined at CB and the value for FB was determined only from those that detached and may represent a considerable underestimate as n<10; in Lilium L.A., by FS the tepals had abscised naturally. Values are means±SE with n≥10 unless otherwise stated.

Mentions: For L. longiflorum, the free portion of the tepals was removed and the filaments and ovary trimmed further to ensure that when clamped only the corolla tissue was held. The clamp, with attached flower, was connected to a strain gauge (M/no DFG-1K; Shimpo), the pedicel was grasped firmly, and a single straight pull was employed to remove the corolla. Where the corolla tore, or was pulled from the clamp, the break strength was recorded as ‘in excess of the recorded value’; hence, for some stages the values presented in Fig. 3B and C are underestimates of the force needed to detach the corolla. For Lilium L.A., individual tepals were trimmed by about one-third of their length, and then clamped and the detachment force determined using a single straight pull of the pedicel. The process then was repeated for the remaining tepals of that flower.


Auxin involvement in tepal senescence and abscission in Lilium: a tale of two lilies.

Lombardi L, Arrom L, Mariotti L, Battelli R, Picciarelli P, Kille P, Stead T, Munné-Bosch S, Rogers HJ - J. Exp. Bot. (2014)

Detachment of tepals in the two lily genotypes. (A) Outside of the corolla base of L. longiflorum at FB, ES, FS, and beyond. (B, C) Force (g) required to remove the corolla of L. longiflorum (B) at each stage (the force required at CB and FB could not be determined as the corolla tissue tore) plus at 1 and 2 d following the FS stage, and in Lilium L.A. (C) (again detachability could not be determined at CB and the value for FB was determined only from those that detached and may represent a considerable underestimate as n<10; in Lilium L.A., by FS the tepals had abscised naturally. Values are means±SE with n≥10 unless otherwise stated.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4321550&req=5

Figure 3: Detachment of tepals in the two lily genotypes. (A) Outside of the corolla base of L. longiflorum at FB, ES, FS, and beyond. (B, C) Force (g) required to remove the corolla of L. longiflorum (B) at each stage (the force required at CB and FB could not be determined as the corolla tissue tore) plus at 1 and 2 d following the FS stage, and in Lilium L.A. (C) (again detachability could not be determined at CB and the value for FB was determined only from those that detached and may represent a considerable underestimate as n<10; in Lilium L.A., by FS the tepals had abscised naturally. Values are means±SE with n≥10 unless otherwise stated.
Mentions: For L. longiflorum, the free portion of the tepals was removed and the filaments and ovary trimmed further to ensure that when clamped only the corolla tissue was held. The clamp, with attached flower, was connected to a strain gauge (M/no DFG-1K; Shimpo), the pedicel was grasped firmly, and a single straight pull was employed to remove the corolla. Where the corolla tore, or was pulled from the clamp, the break strength was recorded as ‘in excess of the recorded value’; hence, for some stages the values presented in Fig. 3B and C are underestimates of the force needed to detach the corolla. For Lilium L.A., individual tepals were trimmed by about one-third of their length, and then clamped and the detachment force determined using a single straight pull of the pedicel. The process then was repeated for the remaining tepals of that flower.

Bottom Line: For example, tepals of Lilium longiflorum wilt substantially, while those of the closely related Lilium longiflorum×Asiatic hybrid (L.A.) abscise turgid.There was a dramatic increase in auxin levels with senescence in L. longiflorum but not in Lilium L.A.Fifty auxin-related genes were expressed in early senescent L. longiflorum tepals including 12 ARF-related genes.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, University of Pisa, Via Ghini 5, 56126 Pisa, Italy.

No MeSH data available.


Related in: MedlinePlus