Host Tree Location Behavior of a Tropical Vine (
            <i>Monstera gigantea</i>
            ) by Skototropism

Strong, Donald R.; Ray, Thomas S.

doi:10.1126/science.190.4216.804

Cited by 107 publications

(70 citation statements)

References 3 publications

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“…Monstera gigantean (Strong and Ray 1975). A photomorphogenic response, hook opening and circumnutating, and induction of twining by blue light and FR light in Cuscuta were described in the past (Lane and Kasperbauer 1965) and later confirmed (Orr et al 1996a(Orr et al , 1996b).…”

Section: Parasite Strategy Of Cuscutamentioning

confidence: 93%

The parasitic mechanism of the holostemparasitic plantCuscuta

Furuhashi

Furuhashi²,

Weckwerth

2011

Journal of Plant Interactions

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Cuscuta is a stem holoparasitic plant without leaves or roots, which develops a haustorium and sucks nutrients from host plants. The genus Cuscuta comprises about 200 species, many of which can cause severe problems for certain crops. The parasitic process in Cuscuta begins in finding and attaching to a host plant and then developing a haustorium. The process does not always require any chemical signal, but does require a light signal. Finding a host involves detecting the lower red light:far-red light ratio near a potential host plant by phytochrome. A contact signal is also necessary for haustorium induction. Apparently, cytokinin increase is downstream of the light and contact signal and is critical for haustorium induction. This pathway, however, appears to be slightly different from a standard pathway. The direct connection between Cuscuta and its host involves both the xylem and phloem, and mRNA and proteins can translocate. Several features indicate that Cuscuta is a useful model plant for parasite plant research as well as plantÁplant interaction research. These include the simple anatomical structure and seedling development, no chemical requirement for haustorium induction, and the wide range of host plants.

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Section: Parasite Strategy Of Cuscutamentioning

confidence: 93%

The parasitic mechanism of the holostemparasitic plantCuscuta

Furuhashi

Furuhashi²,

Weckwerth

2011

Journal of Plant Interactions

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“…About 49 % of all aroids are secondary hemiepiphytes and posses distinctive characteristics when compared with other life forms. It was in these hemiepiphytes that Strong & Ray (1975) found skototropism, and Moodie (1976) reported production of heat during anthesis. We have also found that M. acuminata has one of the highest root pressures yet reported.…”

Section: mentioning

confidence: 99%

“…The genus Monstera (Araceae) comprises 22 species distributed in the neotropics (Madison, 1977b). In Monstera gigantea (M. tenuis or M. dubia according to Madison, 1977b), the juvenile prostrate herb ' searches ' for vertical substrates to climb by means of skototropism, growth towards the darker areas (Strong & Ray, 1975). In this genus, adventitious anchoring roots hold the appressed climber (Croat, 1988) to the bark of the host tree.…”

mentioning

confidence: 99%

Hydraulic architecture of Monstera acuminata: evolutionary consequences of the hemiepiphytic growth form

et al. 2000

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The hydraulic architecture of the secondary hemiepiphyte Monstera acuminata was examined in native plants from Los Tuxtlas, Veracruz, Mexico, to determine how it compared to better-known growth forms such as trees, shrubs, lianas and primary hemiepiphytes. Monstera acuminata starts its life cycle as a prostrate herb. As it ascends a tree or other vertical support, the stem becomes thicker, produces larger leaves, and may die back from the base upwards until only aerial feeding roots serve to connect the stem to the soil. Unlike the pattern of vessel-size distribution along the stems of woody dicotyledons, M. acuminata has its wider vessels at the top of the stem, decreasing in diameter towards the base. Also peculiar is the fact that Huber values (axis area\distal leaf area) tend to increase exponentially at higher positions within the plant. Based on the hydraulic conductivity (k h ) and leafspecific conductivity (LSC, k h \distal leaf area), the base of the stem potentially acts as a severe hydraulic constriction. This constriction is apparently not limiting, as aerial roots are produced further up the stem. The plants have remarkably strong root pressures, up to 225 kPa, which may contribute to the maintenance of functional vessels by refilling them at night or during periods of very high atmospheric humidity, as in foggy weather and rain. In common with dicotyledonous plants, vessel length, vessel diameter, k h , specific conductivity (k s , k h \axis area) and LSCs were all positively correlated with axis diameter. The features of the hydraulic architecture of M. acuminata may be an evolutionary consequence of an anatomical constraint (lack of vascular cambium and therefore of secondary growth) and the special requirements of the hemiepiphytic growth form.

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“…It is also possible that flagellar growth is initiated in those resource-rich stems that can afford to inititate vegetative expansion. In flagellar stems originating from older stems I did not observe skototropic (towards dark) growth (Strong and Ray 1975).…”

Section: Plastic Vegetative Growth: Flagellar Shoots and Climbing Shootsmentioning

confidence: 93%

Biology and use of nibbi heteropsis flexuosa (ARACEAE) the source of an aerial root fiber product in Guyana

Hoffman¹

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Hoffman, Bruce, "Biology and use of nibbi heteropsis flexuosa (ARACEAE) the source of an aerial root fiber product in Guyana" (1997). This thesis, written by Bruce Hoffman, and entitled "Biology and use of Nibbi Heteropsis flexuosa (Araceae): the source of an aerial root fiber product in Guyana", having been approved in respect to style and intellectual content, is referred to you for judgment.We have read this thesis and recommend that it be approved. With present methods, harvest does not decimate populations because 97% of colonized trees possess few harvestable roots. But, only 28% of cut roots re-generated in experiments. For indigenous harvesters at Manawarin village, nibbi harvesting is a primary source of cash income and is important in daily subsistence.iv

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Host Tree Location Behavior of a Tropical Vine ( Monstera gigantea ) by Skototropism

Cited by 107 publications

References 3 publications

The parasitic mechanism of the holostemparasitic plantCuscuta

The parasitic mechanism of the holostemparasitic plantCuscuta

Hydraulic architecture of Monstera acuminata: evolutionary consequences of the hemiepiphytic growth form

Biology and use of nibbi heteropsis flexuosa (ARACEAE) the source of an aerial root fiber product in Guyana

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